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cleanup script and csv file (needs some cleaning) based on https://github.com/krishnakt031990/Crawl-Wiki-For-Acronyms
We can make this file beautiful and searchable if this error is corrected: Illegal quoting in line 32.
acronym definition
0D Zero-dimensional
1AM Air mechanic 1st class
1D One-dimensional
2AM Air mechanic 2nd class
2D Two-dimensional
2G Second-generation mobile (cellular, wireless) telephone system
2LA Two letter acronym
2Lt 2nd lieutenant
3AM Air mechanic 3rd class
3D Three-dimensional
3G Third-generation mobile telephone system
3i Investors In industry (venture capitalists)
3M Minnesota Mining and Manufacturing Company
4D Four-dimensional (usually three spatial plus one temporal dimension, sometimes four spatial ones)
4G Fourth-generation mobile telephone system
4GL Fourth-generation programming language
4WD Four-wheel drive
5D Five-dimensional
6D Six-dimensional
7D Seven-dimensional
8D Eight-dimensional
9D Nine-dimensional
a Atto-
A Ampere
A1C Airman First Class
A4 many, including a European standard office paper size; see entry
A10 Atlantic 10 Conference
aa Afar language (ISO 639-1 code)
aA Attoampere
AA achieved availability,Alcoholics Anonymous, Armed Forces Americas (postal symbol),Aruba (FIPS 10-4 territory code), assembly area,Automobile Association,avenue of approach
AAA administration, authorization, and authentication,American Automobile Association ("Triple-A"),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish, "Assistance, Consulting, and Administration"— original name of Mexican professional wrestling promotion Lucha Libre AAA Worldwide)
AAAI Association for the Advancement of Artificial Intelligence, formerly American Association for Artificial Intelligence
AAAS American Association for the Advancement of Science
AAAV Advanced Amphibious Assault Vehicle
AABN African Aurora Business Network
AABP American Association of Bovine Practitioners
AAC American Athletic Conference,Army Air Corps (British Army),AACL Albanian American Civic League,AACCS American Association of Christian Colleges and Seminaries
AAD analogue-analogue-digital (CD quality),Australian Antarctic Division
AADD Adult attention deficit disorder
AADT annual average daily traffic
AADAC Alberta Alcohol and Drug Abuse Commission
AADC area air defense commander, amino acid decarboxylase, aromatic L-amino acid decarboxylase, Australian Antarctic Data Centre
AAFC U.S. Army Air Corps Ferrying Command (1941-1942),All-America Football Conference (1946-1949)
AAFES Army and Air Force Exchange Service
AAI applied artificial intelligence
AAIS advanced airborne interceptor simulator
AAM air-to-air missile
AAMOF as a matter of fact
AAN American Academy of Nursing
AANEAS Anglo-Australian Near-Earth Asteroid Survey
AAODL Atmospheric Aerosols and Optics Data Library
AAP advanced acquisition plan,Allied administrative publication,American Academy of Pediatrics
AAPC Accounting and Auditing Policy Committee
aar Afar language (ISO 639-2 code)
AAR after-action review,Association of American Railroads
AARP (i/s) American Association of Retired Persons (now officially known only by the initials)
AAS Advanced Automation System,American Astronomical Society ("double-A-S")
AASPEM advanced air-to-air system performance evaluation model
AAT Australian Antarctic Territory
AAV Amphibious Assault Vehicle
AAWC anti-air warfare commander
ab Abkhaz language (ISO 639-1 code)
AB Able Seaman (both the rank and the occupation), Alberta (postal symbol)
ABA Adriatic Basketball Association,American Bar Association,American Basketball Association,American Beverage Association,American Bicycle Association,American Birding Association,Australian Broadcasting Authority
ABB ASEA Brown Boveri (Swiss-Swedish multinational company)
ABBA Agnetha, Benny, Björn, Anni-Frid (Swedish pop group)
ABC abstinence, be faithful, condoms,Active Body Control,airway, breathing, circulation (see CPR),Alcoholic Beverage Commission,alien big cat,always be careful,American Bird Conservancy,American-born Chinese,American Broadcasting Company,anti-lock brake controller,Associated British Corporation,Atanasoff-Berry Computer,Atlantic Baptist College,atomic, biological, chemical (see NBC),Australian Broadcasting Corporation,already been chewed gum
ABCA American, British and Canadian Armies (originally),Army Bureau of Current Affairs
ABCS (U.S.) Army Battle Command System
ABET Accreditation Board for Engineering and Technology
ABFIST Advanced Bradley Full Crew Interactive Skills Trainer
ABGI Addington-Barker Group International
ABIN Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
abk Abkhaz language (ISO 639-2 code)
ABL American Basketball League
ABLE AirBorne Law Enforcement (police air support unit)
ABM anti-ballistic missile-Asynchronous Balanced Mode-automated banking machine
ABMC American Battle Monuments Commission
ABN Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
ABPI Association of the British Pharmaceutical Industry
ABRSM Associated Board of the Royal Schools of Music
ABS acrylonitrile butadiene styrene,anti-lock braking system
ABSA Amalgamated Banks of South Africa ("ab-sa")
ABSTRIPS abstraction-based STRIPS
ABV Alcohol by volume
ABW Aruba (ISO 3166 trigram)
aC Attocoulomb
Ac Actinium
AC Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin, "before Christ"; see BC),ante cibum (Latin, "before meals"), Antigua and Barbuda (FIPS 10-4 country code), Associazione Calcio (Italian, "football (soccer) club"),A/C-Air Conditioned/Conditioning-Aircraft
AC1 Aircraftman 1st Class
AC2 Aircraftman 2nd Class
ACA Affordable Care Act, shorthand for the Patient Protection and Affordable Care Act, commonly called "Obamacare", Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
ACARS Aircraft Communications Addressing and Reporting System
ACAS Aboriginal Children's Advancement Society,Advisory, Conciliation and Arbitration Service
ACB Asociación de Clubes de Baloncesto (Spanish for "Association of Basketball Clubs")
ACC U.S. Air Combat Command,Air Component Commander,Alpine Club of Canada,Altocumulus castellanus,Area Control Center,Atlantic Coast Conference,Automatic climate control
ACCA The Association of Chartered Certified Accountants,Automatic Cloud Cover Assessment
ACCAC Awdurdod Cymwysterau, Cwricwlwm ac Asesu Cymru (Qualifications, Curriculum and Assessment Authority for Wales)
ACCD American Coalition of Citizens with Disabilities
ACCS Air Communications and Control Squadron
ACDA Arms Control & Disarmament Agency
ACDC Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre-Air Commodore
ACDT Apple Certified Desktop Technician, Australian Central Daylight Time
ACE Air Combat Emulator (computer game),Allied Command Europe,Angiotensin-converting enzyme,Armored Combat Earthmover,Automatic Computing Engine
ACES Aerolíneas Centrales de Colombia (Spanish, "Central Colombian Airlines"),Auxiliary Campus Enterprises and Services of Alfred State College
ACF Administration for Children and Families,American Car and Foundry,American Culinary Federation
ACHT Average Call Hold Time
ACID Atomicity, Consistency, Isolation, and Durability (in databases)
ACINT Acoustic Intelligence
ACK Acknowledge (telecommunications; cf. NAK)
ACL Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament,Atlantic Coast Line Railroad
ACLJ American Center for Law and Justice
ACLOS Automatic CLOS (missile control system)
ACLS American Council of Learned Societies
ACLU American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
ACM many, including Association for Computing Machinery; see entry
ACMC (U.S.) Assistant Commandant of the Marine Corps
ACN Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
ACNA Anglican Church in North America
ACO Airspace Control Order
ACOBA Advisory Committee on Business Appointments
ACOG American College of Obstetricians and Gynecologists
ACOM (U.S.) Atlantic Command
ACORN Association of Community Organizations for Reform Now
ACP African, Caribbean and Pacific Group of States,Air Control Point
ACR Advanced Concepts and Requirements
ACRI African Crisis Initiative
ACRT Advanced Concepts Research Tool simulator
ACS Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
ACSC Army Command and Staff College (various nations)
ACST Australian Central Standard Time
ACST American Cooperative School of Tunis
ACT Adaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP-AIDS Coalition to Unleash Power
ACTD Advanced Concept Technology Demonstration
ACTF (U.S.) Army Constructive Training Federation,Australian Children's Television Foundation,ACT-R-ACT-Rational (cognitive model),ACT-R/PM-ACT-R/Perceptual-Motor (cognitive model)
ACTU Australian Council of Trade Unions
ACU American Conservative Union
ACUF BGN Advisory Committee on Undersea Features, American Conservative Union Foundation
ACV Armoured Combat Vehicle
AD Air Defence-Andorra (ISO 3166 digram)-Anno Domini (Latin, "In the year of our Lord")
ADA
ADAC (a/i) Allgemeiner Deutscher Automobil-Club (German, "General German Automobile Club")
ADAGE Air Defense Air to Ground Engagement (simulation)
ADAP AIDS Drug Assistance Program
ADAS (a/i) Asiago-DLR Asteroid Survey
ADAT Alesis Digital Audio Tape (recording format)
ADatP Automated Data Processing
ADATS Agricultural Development and Training Society-Air Defence Anti-Tank System-Australian Defence Air Traffic System
ADB Asian Development Bank
ADC
ADCTS Advanced Distributed Combat Training System
ADD Analog Digital Digital (CD quality)-Attention-Deficit Disorder-Administration on Developmental Disabilities
ADDIE Analyze Design Develop Implement and Evaluate
ADDNS Advanced Deployable Day/Night Simulation
ADF Australian Defence Force-African Development Foundation
ADGB Air Defence of Great Britain
ADHD Attention-Deficit Hyperactivity Disorder
ADHS Attention-Deficit Hyperactivity Syndrome
ADI Acceptable/Allowable Daily Intake
ADIZ (a/i) Air Defence Identification Zone
ADL Anti-Defamation League
ADM Administrative-
ADOA (a/i) Air Defence Operations Area
ADP Adenosine DiPhosphate-Army Doctrine Publication (UK, Canada, Australia)-Automatic/Automated Data Processing
ADRG Arc-second Raster Chart (ARC) Digitized Raster Graphics
ADS (a/i) Active Denial System-Astrophysics Data System-Attention Deficit Syndrome
ADSR Attack, Decay, Sustain, Release (sound envelope specification)
ADT Atlantic Daylight Time (UTC−3 hours)
ADTB Army Doctrine and Training Bulletin
ADW Air Defence Warning
ae Avestan language (ISO 639-1 code)
AE Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram; FIPS 10-4 country code), Artix Entertainment,American Eagle,A&E-(a/i) Arts & Entertainment Network, the original name for the U.S. TV channel now known as A&E Network
AED United Arab Emirates dirham (ISO 4217 currency code)
AEDT Australian Eastern Daylight Time
AEF American Expeditionary Force
AEGIS Airborne Early warning Ground environment Interface Segment (fake etymology)
AESR Aeronautical Equipment Service Record
AEST Australian Eastern Standard Time
aet After extra time (Football)
AEW Airborne early warning,Airborne electronic warfare,All Elite Wrestling (US professional wrestling promotion),AF[edit]
af Afrikaans language (ISO 639-1 code)
aF Attofarad
AF Afghanistan (FIPS 10-4 country code; ISO 3166 digram), Air Force,As fuck
AFA U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish, "Argentine Football Association")
AFAIC As Far As I'm Concerned
AFAICT As Far As I Can Tell
AFAIK As Far As I Know
AFAIR As Far As I Remember/Recall
AFAM (i/a) Associazione Friulana di Astronomia e Meteorologia (Italian, "Friuli Association of Astronomy and Meteorology"), Department of African and Afro-American Studies, University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s
AFATDS Advanced Field Artillery Tactical Data System
AFC American Football Conference,Approved for construction,Asian Football Confederation
AFCEA Armed Forces Communications and Electronics Association
AfD Allianz für Deutschland ("Alliance for Germany"), former political alliance in East Germany,Alternative für Deutschland ("Alternative for Germany"), current German political party
AFD Active Format Description, a technical standard for TV or set-top box decoders,Advanced Format Drive, a type of computing storage device,Adjustable-frequency drive,Adult Film Database, web-based database of adult cinema,Agence française de développement ("French Development Agency"), a French international development agency,Alliance des forces démocratiques (French; "Alliance of Democratic Forces"), an Ivorian political alliance,Alliance for Freedom and Democracy, an Eritrean political party
AFDB African Development Bank
AFES Automatic Fire Extinguishing System
AFG Afghanistan (ISO 3166 trigram)
AFGAM Amazon Facebook Google Apple Microsoft
AFI French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977), "Agencia Federal de Investigaciónes" (México)
AFIS Automated Fingerprint Identification System,American Forces Information Service
AFIST Abrams Full Crew Interactive Skills Trainer
AFJ April Fool's Joke
AFK Away From Keyboard (Internet chat abbreviation)
AFL American Federation of Labor,American Football League — either the 1960s league that merged into the National Football League, or one of several other leagues of American football,Arena Football League,Australian Football League,AFL-CIO-American Federation of Labor-Congress of Industrial Organizations
AFLAC American Family Life Assurance Company of Columbus
AFM Army Field Manual (UK; the U.S. more frequently uses just FM)-Atomic Force Microscope-Aviation Fleet Maintenance
AFN Afghani (ISO 4217 currency code)
AFO Association of Field Ornithologists
AFOSR U.S. Air Force Office of Scientific Research
AFP Agence France-Presse (French, "French Press Agency"),Australian Federal Police
AFQT Armed Forces Qualification Test
afr Afrikaans language (ISO 639-2 code)
AFRC Air Force Reserve Command
AFRL Air Force Research Laboratory
AFRRI (i, U.S.) Armed Forces Radiobiology Research Institute
AFRTS Armed Forces Radio and Television Service
AFS Active Front Steering,Air Facility Sub-System,Amniotic Fluid-derived Stem cell,AFS&A or AFSA-U.S. Air Force Studies and Analysis
AFSC U.S. Air Force Staff College (obsolete; replaced with JFSC),U.S. Air Force Systems Command
AFSCN U.S. Air Force Satellite Control Network
AFSPC Air Force Space Command
AFT American Farmland Trust
AFV armoured fighting vehicle
AFWA Air Force Weather Agency,Association of Fish and Wildlife Agencies,AG[edit]
ag Attogram
Ag Silver (Latin argentum)
AG air gunner,Aktiengesellschaft (German, "incorporated"), Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
AGA (a/i) AB Gas-accumulator ("ah-gah", Swedish company),Advanced Graphics Architecture
AGARD Advisory Group for Aerospace Research and Development
AGARDograph Advanced Guidance for Alliance Research and Development publication
AGASA Akeno Giant Air Shower Array (cosmic ray detector)
AGB Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
AGC Apollo Guidance Computer,Automatic Gain Control
AGC Adjutant General's Corps (British Army)
AGDC Australian Game Developers' Conference
AGI Auxiliary Group Intelligence
AGL Above Ground Level
AGM Annual General Meeting
AGN Active Galactic Nucleus
AGO Angola (ISO 3166 trigram)
AGP Accelerated Graphics Port
AGRICOLA Agriculture Online Access
AGS Alaska Ground Station (LandSat)
AGTS Advanced Gunnery Training System
AGU American Geophysical Union
AGW Autonomous Guided Weapon
aH Attohenry
Ah Ampere-hour
AH Attack Helicopter
AHA American Heart Association
AHCPR Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
AHEC Australian Health Ethics Committee
AHPCRC Army High Performance Computing Research Center
AHQ Air Headquarters
AHRQ Agency for Healthcare Research and Quality
AHS American Housing Survey
AI Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence, Anguilla (ISO 3166 digram)
AIA Aerospace Industries Association,American Institute of Architects, Anguilla (ISO 3166 trigram)
AIAA American Institute of Aeronautics and Astronautics
AIC African Independent Church,Animal Identification Coordinator
AICD Australian Institute of Company Directors
AICMFP And I Claim My Five Pounds
AID U.S. Agency for International Development
AIDS Acquired Immune Deficiency Syndrome
AIM many, including AOL Instant Messenger, Australian Institute of Management; see entry
AIMP Aurora Incremental Modernization Project
AIPAC American Israel Public Affairs Committee
AIR Aircraft Inventory Record
AIRFA American Indian Religious Freedom Act
AIRS (a/i) Aerometric Information Retrieval System (obsolete; replaced with AFS)
AIS Australian Institute of Sport,Automatic Identification System
AISB (British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
aJ Attojoule
AJ Azerbaijan (FIPS 10-4 country code)
Ajax Asynchronous JavaScript And XML
AJD Astronomical Julian day
AJP Allied Joint Publication
AJPW All Japan Pro Wrestling
ak Akan languages (ISO 639-1 code)
aK Attokelvin
AK Alaska (postal symbol)
aka Akan languages (ISO 639-2 code)
AKA Above knee amputation (orthopaedic usage)
AKDT Alaska Standard Daylight Saving Time (UTC−8 hours)
AKST Alaska Standard Time (UTC−9 hours)
AKP Adalet ve Kalkınma Partisi (Turkish, "Justice and Development Party")
aL Attolitre
Al Aluminium
AL Alabama (postal symbol),Albania (FIPS 10-4 country code; ISO 3166 digram), Anno Lucis (Latin, "Year of Light", in Masonic tradition, most often seen on plaques bearing the founding dates of buildings, in years AD and years AL)
ALA Åland Islands (ISO 3166 trigram)
ALAP As Long/Late As Possible
ALARM Air-Launched Anti-Radar Missile
ALB Albania (ISO 3166 trigram)
ALD Accounting Line Designator (nuclear weapon targeting)
ALERT Advanced Linked Extended Reconnaissance and Targeting-Attack and Launch Early Reporting to Theatre
ALF Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
ALG Algeria (IOC and FIFA trigram, but not ISO 3166)
ALGOL ALGOrithmic Language
ALL Albanian lek (ISO 4217 currency code)
ALOA Associated Locksmiths of America, Inc.
ALOC Air Lines Of Communication, Average Length of Calls
ALPA Air Line Pilots Association
ALS Amyotrophic Lateral Sclerosis-Automatic Landing System
ALSHS Abraham Low Self-Help Systems
ALSP Aggregate Level Simulation Protocol
ALTE Association of Language Testers in Europe
ALTACS Automated decision Logic Tactical Air Combat Simulation
am Amharic language (ISO 639-1 code),Attometre
Am Americium
AM many, including Amplitude Modulation and Ante Meridiem; see entry, Armenia (FIPS 10-4 country code; ISO 3166 digram)
AM1 Airman 1st class
AMA American Medical Association,Australian Medical Association
AMAPS Aircraft, Missile, Avionics Performance Simulation
AMC Adaptive modulation and coding (digital communications),U.S. Air Mobility Command,American Motors Corporation,American Movie Classics (TV network; now known simply by the initials),U.S. Army Materiel Command
AMCB U.S. Army/Marine Corps Board
AMD Advanced Micro Devices,Age-related Macular Degeneration, Armenian dram (ISO 4217 currency code)
AMF Afghan Military Force
AMFOM Advanced Missile Fly Out Model ("am-fomm")
AMFR Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
AMFRS Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
amh Amharic language (ISO 639-2 code)
AML Acute Myeloid Leukaemia
AMLCD Active Matrix Liquid Crystal Display
AMLO Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office — separate government agencies in Taiwan and Thailand
AMO Atlantic Multidecadal Oscillation
AMOLED Active-matrix organic light-emitting diode
AMOS Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
AMP Adenosine MonoPhosphate,Automated Mission Planner
AMRAAM Advanced Medium-Range Air-to-Air Missile
AMRDEC U.S. Aviation & Missile Research, Development, & Engineering Center
AMS Agriculture Marketing Service,American Mathematical Society
AMSAA (i/a) U.S. Army Materiel Systems Analysis Activity
AMSO (i/a) U.S. Army Model and Simulation Office
AMSU Advanced Microwave Sounding Unit
AMTE UK Admiralty Marine Technology Establishment (1977-1984)
an Aragonese language (ISO 639-1 code)
aN Attonewton
AN Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
ANA Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body, Australian National Airways,Australian Natives' Association
ANC African National Congress
AND Andorra (ISO 3166 trigram)
ANFO Ammonium nitrate/fuel oil (explosive)
ANG Air National Guard, Angola (IOC and FIFA trigram, but not ISO 3166), Netherlands Antillian guilder (ISO 4217 currency code)
ANGLiCo Air/Naval Gunfire Liaison Company
ANL Argonne National Laboratory
ANM Acoustic Noise Monitor
ANOVA ANalysis Of VAriance
ANS Applied and Natural Sciences
ANSI American National Standards Institute
ANTM
ANT Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram, but not ISO 3166 or FIFA)
ANTY Acronyms, No Thank You
ANWR Arctic National Wildlife Refuge /ˈænwɑːr/
ANZ Australia and New Zealand Banking Group
ANZAC Australian and New Zealand Army Corps
AO Angola (FIPS 10-4 country code; ISO 3166 digram)-Approach Officer (submarine)-Area of Operations
AOA
AOC Air Operations Centre-Air Officer Commanding
AOD Adrenalin O.D. (punk rock band)
AOI Angle Of Incidence Arab Organization for Industrialization
AOL America OnLine
AOR Area of Responsibility
AOSTH Adventures of Sonic the Hedgehog
AOTS Attack of the Show!
AOU American Ornithologists' Union
AP Advanced Placement,Air Publication, Andhra Pradesh (Indian state code), Armed Forces Pacific (postal symbol), Associated Press,Auto Pilot
APA
APB All Points Bulletin (police jargon)
APC Armoured Personnel Carrier,Armour Piercing Capped (ammunition)
APEC Asia Pacific Economic Cooperation
APCNR Armour-Piercing, Composite Non-Rigid (ammunition)
APCR Armour-Piercing, Composite Rigid (ammunition)
APDS Armour-Piercing, Discarding-Sabot (ammunition)
APEDS AMSAA Performance Estimates Data System
APEX Applied Physics Express
APFSDS Armour-Piercing, Fin-Stabilised, Discarding Sabot (ammunition)
APHA American Public Health Association
APHE Armour-Piercing, High Explosive (ammunition)
APHIS Animal and Plant Health Inspection Service
API Application Programming Interface
APL A Programming Language,Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
APM Advanced Power Management
APNP Advanced Practice Nurse Prescriber
APOD Aerial Port (Airport) Of Debarkation
APOE Aerial Port (Airport) Of Embarkation
APOLLO Apache Point Observatory Lunar Laser-ranging Operation
APP Allied Procedural Publication
APR Annual Percentage Rate
APS Advanced Photo System (cf. APS-C, an image sensor format based on the size of the original APS film frame),American Physical Society,Antiphospholipid Antibody Syndrome,AQ[edit]
AQ AdventureQuest, American Samoa (FIPS 10-4 territory code),Antarctica (ISO 3166 digram), Automatic qualifier, a term used by U.S. sports media from 1998 to 2013 to refer to the six conferences whose champions automatically entered the now-defunct Bowl Championship Series of college football
AQIM Al-Qaeda in the Islamic Maghreb
ar Arabic language (ISO 639-1 code)
Ar Argon
AR Argentina (FIPS 10-4 country code; ISO 3166 digram)-Arkansas (postal symbol)-Armour-Arunachal Pradesh (Indian state code)
ara Arabic language (ISO 639-2 code)
ARAG Advanced Research and Assessment Group
ARB Administrative Review Board
ARBA (a/i) Army Review Boards Agency
ARC Arc-second Raster Chart-Appalachian Regional Commission
ARCA Automobile Racing Club of America
ARCENT United States Army Central Command
ARDA Advanced Research and Development Activity (became DTO 2006)
ARE UK Admiralty Research Establishment (-1991)-United Arab Emirates (ISO 3166 trigram)
ARF ASEAN Regional Forum
arg Aragonese language (ISO 639-2 code)
ARG Argentina (ISO 3166 trigram)
ARH Armed Reconnaissance Helicopter
ARI Acute Respiratory Infection-U.S. Army Research Institute for the Behavioral and Social Sciences
ARL UK Admiralty Research Laboratory (1921-1977)-U.S. Army Research Laboratory-UIUC Aviation Research Laboratory
ARM Anti-Radiation Missile-Adjustable-rate mortgage-Armenia (ISO 3166 trigram)
ARNet Acquisition Reform Network
ARP Address Resolution Protocol-Applied Research Programme
ARPA Advanced Research Projects Agency
ARRC ACE Rapid Reaction Corps
ARRF Allied Rapid Reaction Force
ARRL American Radio Relay League
ARS Agricultural Research Service-Argentine peso (ISO 4217 currency code)
ARSC Arctic Region Supercomputing Center
ARSPACE U.S. Army Space Command
ART Adaptive Resonance Theory-Anti-Retroviral Therapy
ARTCC Air Route Traffic Control Center
ARWG Army Research Working Group ("are-wig")
as Adult swim, Assamese language (ISO 639-1 code),Attosecond
aS Attosiemens
As Arsenic
AS American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
AS ActionScript
ASA AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
ASAP As Soon As Possible
ASARS Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
ASB Associated Student Body-Alternative Service Book (Church of England)
asbl association sans but lucratif (French "Non-profit organisation")
ASBO Antisocial Behavior Order
ASCAP American Society of Composers, Authors, and Publishers
ASCC Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
ASCIET All Services Combat Identification Evaluation Team
ASCII American Standard Code for Information Interchange
ASD (U.S.) Assistant Secretary of Defense,Autism spectrum disorder,ASD(C3I)-(U.S.) (Command, Control, Communications, & Intelligence),ASD(FMP)-(U.S.) Assistant Secretary of Defense (Force Management Policy),ASD(HA)-(U.S.) Assistant Secretary of Defense (Health Affairs),ASD(ISA)-(U.S.) Assistant Secretary of Defense (International Security Affairs),ASD(ISP)-(U.S.) Assistant Secretary of Defense (International Security Policy),ASD(LA)-(U.S.) Assistant Secretary of Defense (Legislative Affairs),ASD(PA)-(U.S.) Assistant Secretary of Defense (Public Affairs),ASD(RA)-(U.S.) Assistant Secretary of Defense (Reserve Affairs),ASD(SO&HA)-(U.S.) Assistant Secretary of Defense (Special Operations & Humanitarian Assistance),ASD(SO/LIC)-(U.S.) (Special Operations & Low-Intensity Conflict),ASD(S&R)-(U.S.) Assistant Secretary of Defense (Strategy & Requirements),ASD(S&TR)-(U.S.) Assistant Secretary of Defense (Strategy & Threat Reduction)
ASDIC Allied Submarine Detection Investigation Committee (Sonar)
ASEAN Association of Southeast Asian Nations
ASFAR Americans for a Society Free of Age Restrictions
ASG Area Support Group
ASIC Australian Securities and Investments Commission-Aviation Security Identification Card
ASICS Anima sana in corpore sano (Latin, "A sound mind in a sound body") (athletic shoe manufacturer)
ASIO Australian Security Intelligence Organisation,Audio stream input output
ASIP Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
ASL Above Sea Level,American Sign Language (also known as Ameslan),"Age, Sex, Location?" (Internet slang)
asm Assamese language (ISO 639-2 code)
ASM Air-to-Surface Missile, American Samoa (ISO 3166 trigram), American Society for Metals,American Society for Microbiology,Association Sportive Montferrandaise (French, "Clermont-Ferrand Sporting Association"), as in ASM Clermont Auvergne
ASMB American Society for Matrix Biology,Adult Swim Message Board
ASME American Society of Mechanical Engineers,American Society of Magazine ors
ASMP Air-Sol Moyenne Portée missile (French "Medium-range air to surface"), Asymmetric multiprocessing
ASMR Autonomous Sensory Meridian Response
ASN Associate of Science in Nursing
ASOC (a/i) Air Sovereignty Operations Centre,Air Support Operations Centre,Airport Security and Operations Centre,Antarctic and Southern Ocean Coalition,Atlanta Symphony Orchestra Chorus,Australian Standard Offence Classification
ASP Active Server Pages,American Society of Primatologists,Ammunition Supply Point,Application Service Provider (cf internet service provider),Astronomical Society of the Pacific,Association of Surfing Professionals
ASPI Australian Strategic Policy Institute
ASR Alkali-silica reaction,Anti Slip Regulation
ASRAAM Advanced Short-Range Air-to-Air Missile
ASSC Association for the Scientific Study of Consciousness
AST Atlantic Standard Time (UTC−4 hours)
ASTIA Armed Services Technical Information Agency
ASTM American Society for Testing and Materials
ASTREA Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
ASUN Atlantic Sun (Conference)
ASUW AntiSUrface Warfare
ASVAB Armed Services Vocational Aptitude Battery (taken by juniors in high school in the USA)
ASVEL Association Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for "Sporting Association"; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais)
ASW AntiSubmarine Warfare
ASWORG (U.S.) AntiSubmarine Warfare Operations Research Group
ASX Advanced Stream Redirector,Australian Securities Exchange,AT[edit]
aT Attotesla
At Astatine
AT
ATA
ATAC Air Transportable Acoustic Communications
ATACMS Army TACtical Missile System
ATAPI Advanced Technology Attachment Packet Interface
ATAS Air-To-Air Stinger (missile)
ATAT Aiken Tactical Airsoft Team / Star Wars vehicle
ATB Active Time Battle-British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
ATC Air Traffic Control-Air Training Corps-U.S. Air Transport Command (1942-1948)-Athletic Trainer, Certified (www.nata.org)
ATCCIS Army Tactical Command and Control Information System
ATESS Aerospace and Telecommunications Engineering Support Squadron
ATF French Southern Territories (ISO 3166 trigram)-(U.S.) Bureau of Alcohol, Tobacco, Firearms and Explosives (from its previous name, which did not include "Explosives")
ATG Antigua and Barbuda (ISO 3166 and FIFA trigram)
ATGM Anti-Tank Guided Missile
ATGW Anti-Tank Guided Weapon
ATI Allied Telesyn International, Inc.-Array Technologies Incorporated. (ATI Technologies)
Atisbo a Local Government Area in Nigeria named for constituent communities (Ago-Are, Tede, Irawo,
ATK Attack
ATL Atlanta, Georgia, the largest city and capital of Georgia
ATLAS All-Terrain Lifter Army System-Assessment Tool for LAnd Systems
ATM Automated Teller Machine-Asynchronous Transfer Mode-At The Moment
ATN Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
ATO Air Tasking Order-Australian Taxation Office
ATP Adenosine TriPhosphate-Allied Tactical Publication-Ammunition Transfer Point
ATSD (U.S.) Assistant Secretary of Defense
ATSDR Agency for Toxic Substances and Disease Registry
ATV All-Terrain Vehicle
ATWA Air, Trees, Water, Animals
Au Gold (Latin Aurum)
AU African Union (was OAU before 2000)-
AUC Ab Urbe Condita / Anno Urbis Conditae (Latin "from the founding of the city" / "in the year since the founding of the city") (of Rome)-Area Under the Curve (concentration time curve; medicine)
AUD Australian dollar (ISO 4217 currency code)
AUS Australia (ISO 3166 trigram)
AUSCANNZUKUS Australia, Canada, New Zealand, United Kingdom, United States (security designation)
Auslan Australian Sign Language
AUT Austria (ISO 3166 trigram)
AUTL Army Universal Task List
av Avar language (ISO 639-1 code)
aV Attovolt
Av Aperture value (photographic mode)
AV Anguilla (FIPS 10-4 territory code), Audio-Visual, Aviation
ava Avar language (ISO 639-2 code)
AVA American Viticultural Area
AVB Audio Video Bridging
AVDLR Aviation Depot Level Repair
ave Avestan language (ISO 639-2 code)
AVGP Armoured Vehicle, General Purpose
AVI Audio Video Interleave
AVIM Aviation Intermediate Maintenance
AVLB Armoured Vehicle Launched Body
AVM Air Vice-Marshal, Arteriovenous malformation
AVO Apprehended Violence Order
AVP Arubaanse Volkspartij
AVP Association of Volleyball Professionals
AVRE Armoured Vehicle Royal Engineers
AVTB Armoured Vehicle Test Bed, Aviation Test Bed
AVUM Aviation Unit Maintenance
AVVO Acute Vaginal Venereal Outbreak
aW Attowatt
AW Aruba (ISO 3166 digram)
AWA American Wrestling Association
AWACS Airborne Warning And Control System
AWC Air Warfare Centre
AWD many, including All Wheel Drive; see entry
AWE (i/a) Advanced Warfighting Experiment
AWG Aruban guilder (ISO 4217 currency code)
AWOL Absent Without Official Leave / Absent WithOut Leave (military jargon)
AWP Awaiting Parts (SM&R code)
AWSIM Air Warfare SIMulation
AWST Australian Western Standard Time
AWW Above Water Warfare
AX Åland Islands (ISO 3166 digram)
AXP Ambulance eXchange Point
ay Aymara language (ISO 639-1 code)
AY Antarctica (FIPS 10-4 territory code)
AYBABTU All Your Base Are Belong To Us
aym Aymara language (ISO 639-2 code)
AYU As Yet Unknown
az Azerbaijani language (ISO 639-1 code)
AZ Arizona (postal symbol),Azerbaijan (ISO 3166 digram), Alkmaar Zaanstreek (Dutch football club)
aze Azerbaijani language (ISO 639-2 code)
AZE Azerbaijan (ISO 3166 trigram)
AZN Azerbaijani manat (ISO 4217 currency code)
AZUR Actions en zone urbaine (French, Urban Operations)
B10 Ben 10
B2B Business-to-business electronic commerce
B2C Business-to-consumer electronic commerce
B2E Business-to-employee electronic commerce
B2M Business to many
BAR Barbados (IOC trigram, but not FIFA or ISO 3166), British American Racing,Browning Automatic Rifle,Buy-American Restrictions,BARD -Binational Agricultural Research and Development fund (between the US and Israel),BARDA -Biomedical Advanced Research and Development Authority,BART -Bay Area Rapid Transit,BAS -Battalion Aid Station,BASE -Building, Antenna, Span, Earth (parachute from),BASF -Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory, a German chemicals company),BASIC -Beginner's All-purpose Symbolic Instruction Code (acronym was added later, originally it was simply Basic),BAT -(a/i) Basic Aid Training,BATF -U.S. Bureau of Alcohol, Tobacco, and Firearms,BATS -Behavior Analysis Training System -Bradley Advanced Training System,BATTeRS -Bisei Asteroid Tracking Telescope for Rapid Survey,BB[edit]
BB Barbados (ISO 3166 digram; FIPS 10-4 country code), Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
BBB Better Business Bureau,Blood-brain barrier
BBC Breeding Bird Census,British Broadcasting Corporation, Bumper to Back of Cab (trucking measurement)
BBD Barbadian dollar (ISO 4217 currency code), Bowel Bladder Dysfunction
BBL Be Back Later,Bird Banding Laboratory,British Basketball League,BBN -Bolt, Beranek and Newman,BBQ -Barbecue[1]
BBS Breeding Bird Survey (North America),Brigade/Battalion Battle Simulation,Bulletin Board System,BBSRC -U.K. Biotechnology and Biological Sciences Research Council,BBVA -Banco Bilbao Vizcaya Argentaria (Spanish bank)
BBYO B'nai B'rith Youth Organization
BC Before Christ,Blind Copy (in emailers),Boston College, Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
BCA Bachelor of Computer Application,Black Coaches & Administrators,BCC -Blind Carbon Copy
BCCI Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD -Binary-Coded Decimal
BCE Banque centrale européenne (French, "European Central Bank"),Battlefield Co-ordination Element,BC Electric, a former name for BC Hydro,Before Common Era,BCER -British Columbia Electric Railway,BCFG -Patchy Fog (METAR Code),BCIS (fratricide avoidance system) -Battlefield Combat Identification System,BCLL -Bibliography of Celtic Latin Literature,BCPL -Basic Combined Programming Language (progenitor of C)
BCS Bachelor of Computer Science,Bardeen, Cooper, and Schrieffer superconduction theory,Bowl Championship Series (US college football),BCT -Brigade Combat Team,BD[edit]
BD Bangladesh (ISO 3166 digram),Bermuda (FIPS 10-4 territory code),BDA -British Dental Association
BDD Body Dysmorphic Disorder,British Defence Doctrine,Bde -Brigade,BDFL -Benevolent Dictator For Life,BDI -Burundi (ISO 3166 trigram),BDNF -Brain-Derived Neurotrophic Factor,BDO -Battle Dress Overgarment,BDOS -Basic Disk Operating System; part of CP/M
BDS  -Bachelor of Dental Surgery,Boycott, Divestment and Sanctions, a movement advocating various boycotts of Israel in the context of the Arab-Israeli conflict,BDSM -Bondage and Discipline, Domination and Submission, Sadism and Masochism
BDT Bangladeshi taka (ISO 4217 currency code), Bureau de développement des télécommunications (Telecommunication Development Bureau, became ITU-D),BDU -Battle-Dress Uniform,BE[edit],be -Belarusian language (ISO 639-1 code),Be -Beryllium,BE -Belgium (FIPS 10-4 country code; ISO 3166 digram)
BEA Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel -Belarusian language (ISO 639-2 code),BEL -Belgium (ISO 3166 trigram),BEM -British Empire Medal -Bug-Eyed Monster,ben -Bengali language (ISO 639-2 code),BEN -Benin (ISO 3166 trigram),BEO -Banquet Event Order,BERC -Business Environmental Resource Center,BER -Bit Error Rate
BES Budget Estimate Submission, Caribbean Netherlands (ISO 3166 trigram; from the entity's alternate name of Bonaire, Sint Eustatius and Saba),BESS -Business, Education, and Social Sciences,BET -(a/i) Black Entertainment Television,BETS -Bradley Embedded Training System,BF[edit],BF -The Bahamas (FIPS 10-4 country code) -Burkina Faso (ISO 3166 digram),b/f -before,BFA -Burkina Faso (ISO 3166 trigram),BfArM -Bundesinstitut für Arzneimittel und Medizinprodukte, German governmental institute for drugs and medical devices,BFF -Best Friends Forever,BFI -British Film Institute,BFR -Biennial flight review,BFR -Brominated Flame Retardant,BFS -Belfast International Airport (IATA airport code),BFSA -Blue Force Situation Awareness,BFT -Blue Force Tracking,BFX -Bioinformatics,BG[edit],bg -Bulgarian language (ISO 639-1 code),BG -Bangladesh (FIPS 10-4 country code) -, Battle Group -Body Guard -Brigadier General -Bulgaria (ISO 3166 digram),BGA -Ball Grid Array -Brandy and Ginger Ale (alcoholic beverage),BGD -Bangladesh (ISO 3166 trigram),BGN -U.S. Board on Geographic Names -Bulgarian lev (ISO 4217 currency code),BGR -Bulgaria (ISO 3166 trigram),BGS -Bristol Grammar School -British Geographical Survey,BGWG -Battle Group Wargame (military simulation; "big wig"),BH[edit],bh -Bihari languages (ISO 639-1 code),Bh -Bohrium
BH Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code),BHD -Bahraini dinar (ISO 4217 currency code),BHR -Bahrain (ISO 3166 trigram)
BHS British Home Stores, The Bahamas (ISO 3166 trigram),
BI Bislami language (ISO 639-1 code),
Bi Bismuth
BI Burundi (ISO 3166 digram)
BIAP Baghdad International Airport -Biafran pound
BICS Battlefield Information and Communication System
BID bis in die (Latin, "twice a day")
BIDST British Institute of Dental and Surgical Technologists,
BIF -Burundian franc (ISO 4217 currency code),
bih -Bihari languages (ISO 639-2 code),
BIH -Bosnia and Herzegovina (ISO 3166 trigram),
BIOS -Basic Input/Output System -British Institute of Organ Studies,
BIP -Battlefield Interoperability Programme (ancestor of MIP) -Broadcast incremental power algorithm,
bis -Bislami language (ISO 639-2 code),
BISEPS -Battlefield Identification System Environment Performance Simulation,
BIST -Built-In Self-Test,
BIT -Bilateral Investment Treaty -Built-In Test,
BITE -Built-In Test Equipment,BJ[edit],BJ -Benin (ISO 3166 digram) -Blowjob (oral sex),BJJ -Brazilian Jiu-Jitsu,BJP -Bharatiya Janata Party (Indian People's Party),BJT -Bipolar Junction Transistor,BK[edit],Bk -Berkelium,BK -Burger King -Bankrupt (most often seen as "gone BK") -Bosnia and Herzegovina (FIPS 10-4 country code),BKN -Broken Sky (METAR Code),BL[edit],BL -Bolivia (FIPS 10-4 country code) -British Leyland,BLCSE -Battle Laboratory Constructive Simulation Environment,BLDU -Blowing Dust (METAR Code),BLEVE -Boiling Liquid Expanding Vapour Explosion ("blevy"),BLOB -Binary Large OBject,BLR -Belarus (ISO 3166 trigram),BLSA -Blowing Sand (METAR Code),BLRSI -Battle Lab Reconfigurable Simulator (U.S. Army),BLSN -Blowing Snow (METAR Code),BLT -Bacon Lettuce Tomato (sandwich),BLUFOR -Blue Force (military),BLUI -(a/i) Body Language User Interface ("blooie"),BLZ -Belize (ISO 3166 trigram),BM[edit],bm -Bambara language (ISO 639-1 code),BM -Battle Management -Bermuda (ISO 3166 digram) -Myanmar (FIPS 10-4 country code; from Burma),BMA -British Medical Association,BMCC -Borough of Manhattan Community College,BMD -, Ballistic Missile Defence -Bermudian dollar (ISO 4217 currency code) -Boyevaya Mashina Desanta (Russian Боевая Машина Десанта, "Combat Vehicle Airborne") †[2] -British Military Doctrine,BMDG -British Military Doctrine Group,BMDO -(U.S.) Ballistic Missile Defense Organization ("bim-do"),BME -Biomedical Engineering -Black and Minority Ethnic group -Body Modification E-zine,BMEWS -(a/i) Ballistic Missile Early Warning System ("bee-mews"),BMI -Body Mass Index -Broadcast Music Incorporated,BMG -Bertelsmann Music Group,BML -Battle Management Language,BMNT -Begin Morning Nautical Twilight,BMP -Boyevaya Mashina Pekhoti (Russian Боевая Машина Пехоты, "Combat Vehicle for the Infantry") †[2],BMR -Basal metabolic rate -Bronirovannaya Mashina Razminirovaniya (Russian Бронированная Машина Разминирования, "Armoured Vehicle for Mine-Clearing") †[2],BMU -Bermuda (ISO 3166 trigram),BMW -Bayerische Motoren Werke (German, "Bavarian Motor Works"),BMX -Bicycle/Bike Moto (r) Cross,BN[edit],bn -Bengali language (ISO 639-1 code),Bn -Battalion,BN -Brunei (ISO 3166 digram; FIPS 10-4 country code),BND -Brunei dollar (ISO 4217 currency code),BnF -Bibliothèque nationale de France (French, "National Library of France")
BNF Backus-Naur form (computing),British National Formulary,BNICE -Biological, Nuclear, Incendiary, Chemical, and Explosive Agents
BNP British National Party,Banque Nationale de Paris, a predecessor to today's BNP Paribas,BNS -Bank of Nova Scotia,BNSF -(i/s) Burlington Northern Santa Fe (also AAR reporting mark),BO[edit],bo -Tibetan language (ISO 639-1 code)
BO Back Orifice, Belarus (FIPS 10-4 country code), Biarritz Olympique (French rugby union club), Bolivia (ISO 3166 digram), Body odor,BO2k -Back Orifice 2000,BOAC -British Overseas Airways Corporation (predecessor of British Airways)
BoAML Bank of America Merrill Lynch
BOC British Orthodontic Society,British Oxygen Company,BÖC -Blue Öyster Cult,bod -Tibetan language (ISO 639-2 code),BOD -Biochemical Oxygen Demand,BODMAS -Brackets, Orders, Division, Multiplication, Addition, Subtraction,BOFH -Bastard Operator From Hell,BOGA -Bend Over and Grab Ankles,BOGOF -Buy One, Get One Free
BOGs Bunch of Guys
BOI Balance Of Investment,Basis Of Issue,BOL -Bolivia (ISO 3166 trigram)
BOM Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting,BOP -Balance of Payments,BOPB -Biarritz Olympique Pays Basque (the complete name of the rugby club),BOPD -Barrel of Oil Per Day
BOQ Bill Of Quotations,Bachelor Officers' Quarters,Bank Of Queensland,bos -Bosnian language (ISO 639-2 code),BOS -Battlefield Operating System
BOT Balance of Trade, Botswana (IOC and FIFA trigram, but not ISO 3166), Build Operate Transfer, Bank of Thailand,BP[edit]
BP Battle Position,British Petroleum (today, BP does not officially stand for anything), Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands),Bp -Bishop,BPD -Bipolar Personality Disorder,BPM -Beats Per Minute,BPMo -Business Process Mobility
BPV Battlefield Planning Visualization,Bovine papillomavirus,BQ[edit]
BQ British Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979),Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire, Sint Eustatius and Saba),Navassa Island (FIPS 10-4 territory code),BR[edit],br -Breton language (ISO 639-1 code),Br -Bromine
BR Brazil (ISO 3166 digram; FIPS 10-4 country code) -Bihar (Indian state code), British Rail,Break Ranks (marching band term),BRA -Brazil (ISO 3166 trigram),BRAG -Bicycle Ride Across Georgia,BRASS -Breathe, Relax, Aim, Sight, Squeeze (Acronym for using a rifle)
BRB Barbados (ISO 3166 trigram), "Be Right Back" (Internet chat abbreviation),BRDM -Boyevaya Razvedyvatelnaya Dosornaya Mashina (Russian Боевая Разведывательная Дозорная Машина, "Combat Reconnaissance Patrol Vehicle") †[2],bre -Breton language (ISO 639-2 code),BRFSS -Behavioral Risk Factor Surveillance System ("burf-us", a CDC health survey covering the U.S. and its territories),BRI -Bathroom ers Institute (publishers of series of "Uncle John's Bathroom ers" books),BRIC -Brazil, Russia, India and China,BRICS -Brazil, Russia, India, China and South Africa,BRIMS -Behavior Representation In Modeling and Simulation (conference),BRL -Brazilian real (ISO 4217 currency code),BRM -Boyevaya Razvedyvatelnaya Mashina (Russian Боевая Разведывательная Машина, "Combat Reconnaissance Vehicle") †[2]
BRN Bahrain (IOC trigram, but not FIFA or ISO 3166), Brunei (ISO 3166 trigram),BRSB -Battlefield Reasoning System Brianna,BRU -Brunei (IOC and FIFA trigram, but not ISO 3166),BS[edit],bs -Bosnian language (ISO 639-1 code)
BS The Bahamas (ISO 3166 digram),Bassas da India (FIPS 10-4 territory code),Bachelor of Science degree,British subject
Bullshit
BSA Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
BSatCoP Benjamin Sniddlegrass and the Cauldron of Penguins
BSD Bahamian dollar (ISO 4217 currency code), Berkeley Software Distribution (distinct from BSoD)
BSE Bovine Spongiform Encephalopathy, better known as mad cow disease
BSL Basketbol Süper Ligi (Turkish, "Basketball Super League"; top Turkish men's league),British Sign Language,BSMB -British Society for Matrix Biology
BSN Baloncesto Superior Nacional (Spanish, "National Superior Basketball"; top Puerto Rican league),Bank Simpanan Nasional (Malay, "National Savings Bank"; government-owned Malaysian bank)
BSNL Bharat Sanchar Nigam Limited, Bachelor of Science in Nursing,BSoD -Blue Screen of Death (distinct from BSD)
BSP Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread), Business-sponsored,Bone sialoprotein
BSS Block Starting with Symbol-see .bss,Boxed Set Syndrome-where one starts watching a boxed set of DVDs and just can't stop until you've watched them all
BST Binary search tree,Blended Sales Tax, Bovine somatotropin, British Summer Time,BSW -British Standard Whitworth (screw thread),BSX -Bendigo Stock Exchange,BT[edit]
Bt Baronet,Bacillus thuringiensis
BT Baal teshuva (Hebrew, "master of return") -used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph, Bhutan (FIPS 10-4 country code; ISO 3166 digram), BitTorrent,British Telecom, the former name of the company now known as BT Group,BTDT -Been There, Done That,Bti -Bacillus thuringiensis israelensis,BTID -Battlefield Target Identification Device,BTIS -Battlefield Target Identification System
BTN Bhutan (ISO 3166 trigram),Bhutanese ngultrum (ISO 4217 currency code),BTO -Built To Order,BTP -British Transport Police,BTR -Bronetransporter (БТР = Бронетранспортер "(Heavy) Armoured (Personnel) Transporter") †[2],BTU -British Thermal Unit,BTW -By The Way,BU[edit],BU -,Bulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989),BUAV -British Union for the Abolition of Vivisection,BUG-E -Battlefield Universal Gateway Equipment ("buggy"),bul -,Bulgarian language (ISO 639-2 code),BUL -,Bulgaria (IOC and FIFA trigram, but not ISO 3166),BUNO or BuNo -Bureau Number (aircraft serial number),BUR -,Burma (ISO 3166 trigram; obsolete since 1989),BV[edit],BV -,Background Vocals -,Battlefield Visualization -,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
BVB Ballspielverein Borussia 09 e.V. Dortmund, the full German name of the football club known in English as Borussia Dortmund,Bursa de Valori București (Romanian for Bucharest Stock Exchange),BVD -Bradley, Voorhees & Day (underwear manufacturer),BVR -Beyond Visual Range,BVT -Bouvet Island (ISO 3166 trigram),BW[edit],B&W -Babcock & Wilcox -Black and White -Bowers & Wilkins,BW -Bring Wedges (ISO digram),BW -Botswana (ISO 3166 digram),BWA -Botswana (ISO 3166 trigram),BWARS -Bees, Wasps & Ants Recording Society,BWC -Biological and Toxin Weapons Convention,BWP -Botswana pula (ISO 4217 currency code),BWR -Boiling-Water Reactor,BX[edit],BX -Base eXchange -,BY[edit],BY -,Burundi (FIPS 10-4 country code) -,Belarus (ISO 3166 digram),BYOB -Bring Your Own Bottle (or,"beer", "beverage", or "booze") (multiple, but similar, meanings),BYOC -Bring Your Own Computer (play on BYOB),BYOF -Bring Your Own Flask,BYR -Belarusian ruble (ISO 4217 currency code),BYS -,Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992),BYU -Brigham Young University,BZ[edit],BZ -Belize (ISO 3166 digram),BZD -Belize dollar (ISO 4217 currency code),BZP -Benzylpiperazine,References[edit],^ See references and discussion under Barbecue and :List of acronyms and initialisms: B. Examples of use: [1], [2] Archived 2016-03-04 at the Wayback Machine, [3], [4],^ a b c d e f "Archived copy" (PDF). Archived from the original (PDF) on 2008-02-27. Retrieved 2008-02-27.CS1 maint: Archived copy as title (link),^ http://www.tbkarunia.com[permanent dead link],vteList of acronyms,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,Retrieved from "https://en.wikipedia.org/w/index.php?title=List_of_acronyms:_B&oldid=888978318",Categories: Lists of acronymsHidden categories: Webarchive template wayback linksCS1 maint: Archived copy as titleAll articles with dead external linkss with dead external links from December 2017s with permanently dead external linkss with short description,Navigation menu,Personal tools,Not logged inContributionsCreate accountLog in,Namespaces,,,,View history,
c Centi
C Carbon-Coulomb-One Hundred (in Roman numerals)
c2c the British rail company formerly known as LTS Rail
C2C Consumer-To-Consumer electronic commerce-Cam-To-Cam internet chat
ca Catalan language (ISO 639-1 code)
Ca Calcium
CA California (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia, Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
CAA Canadian Automobile Association,(NORAD) Center for Aerospace Analysis,(U.S.) Center for Army Analysis,(U.S.) Clean Air Act,(U.S. Army) Concepts Analysis Agency,Civil Aviation Authority,Colonial Athletic Association
CAAT or Campaign Against Arms Trade,Center for Alternatives to Animal Testing
CAC California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier,CACM Central American Common Market
CACM Communications of the ACM
CAD Canadian dollar (ISO 4217 currency code), Computer-Aided Design,Computer-Aided Dispatch,Cpplint Anxiety Disorder-Condition suffered by software developers who worry about whether they've left any whitespace on the end of a line
CADCAM Computer-Aided Design/Computer-Aided Manufacturing
CADPAT CAnadian Disruptive PATtern
CADMID Concept, Assessment, Demonstration, Manufacture, In service, Disposal (life cycle mnemonic)
CAE Canadian Aviation Electronics (originally),Certificate in Advanced English
CAEn (i/a) Close Action Engagement (constructive simulation)
CAF Central African Republic (ISO 3166 trigram), Confederation of African Football (or French Confédération Africaine de Football)
CAFAD Combined Arms For Air Defence
CAFDE Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
CAFE Corporate Average Fuel Economy standard
CAI Computer Assisted Instruction
CAIR Council on American-Islamic Relations
CALABARZON A region in the Philippines: CAvite, LAguna, BAtangas, Rizal, queZON
CALL (U.S.) Center for Army Lessons Learned
CALM Communications, Air-interface, Long and Medium range
CalPERS California Public Employees' Retirement System
Caltrans California Department of Transportation
CAM Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
CAMRA CAMpaign for Real Ale
CAN Canada (ISO 3166 trigram)
CANA Convulsive Antidote, Nerve Agent
CANDU CANada Deuterium Uranium (nuclear reactor design)
Canola Canadian oil, low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
CAP Combat Air Patrol,Civil Air Patrol,Common [Operating/Operational] Air Picture,Crisis Action Procedures,Common Agricultural Policy (European Union)
CAPES CAPability Evaluation System, Combined Arms Planning and Execution System,CARB-California Air Resources Board
CARE Citizens Association for Racial Equality (former New Zealand organisation), Community database on Accidents on the Roads in Europe, Cooperative for Aid and Relief Everywhere (originally Cooperative for American Remittances to Europe)
CARMONETTE Computerized Monte Carlo Simulation
CARP Computed Air Release Point
CART Championship Auto Racing Teams (now defunct)
CAS Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
CASA Civil Aviation Safety Authority
CASE Cellular ammunition storage equipment,Computer-Aided Software Engineering
CASS Command Activated Sonobuoy System
CASTFOREM Combined Arms and Support Task FORce Evaluation Model
CASTOR Canadian Automatic Small Telescopes for Orbital Research
cat Catalan language (ISO 639-2 code)
CAT Community Acceptance Testing,Computer-Assisted (or Axial) Tomography
CATK Counterattack
CATS Computer Active Technology Suspension
CATT (a/i) Combined Arms Tactical Trainer
CAV Cavalry
CAVOK Ceiling And Visibility OK ("Kav-okay")
CAW Canadian Auto Workers (trade union)
CB Citizens' Band radio, Cambodia (FIPS 10-4 country code)
CBASSE Commission on Behavioral And Social Sciences and Education ("sea bass")
CBC Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
CBE Commander of the Order of the British Empire,Cab Beside Engine (see truck)
CBF Confederação Brasileira de Futebol (Portuguese, "Brazilian Football Confederation")
CBGB Country, Blue Grass, and Blues (former New York City nightclub)
CBLA Comparative bullet lead analysis
CBN
CBM many, including Canadian Baptist Ministries and Commodore Business Machines; see entry
CBML Coalition Battle Management Language
CBOL Consortium for the Barcode of Life
CBOT Chicago Board of Trade
CBR Case-Based Reasoning
CBRN Chemical, Biological, Radiological, or Nuclear (weapon or event)
CBRNE Chemical, Biological, Radiological, Nuclear or [high-yield] Explosive (weapon or event)
CBS Columbia Broadcasting System,Corps Battle Simulation
CBT Cognitive Behaviour Therapy, Combat
CBUS Columbus, Ohio
CC many, including carbon copy; see entry
CCA Counter Command Activity
CCC Canterbury Clothing Company,Civilian Conservation Corps (U.S., 1930s and 1940s),Corpus Christi College, Oxford
CCCP Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik, Russian Союз Советских Социалистических Республик, Union of Soviet Socialist Republics)
CCD Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
CCF Cartoon Cartoon Fridays
CCG Canadian Coast Guard,Collectible Card Game
CCGC Canadian Coast Guard Cutter,Canadian Coast Guard College
CCGH Canadian Coast Guard Hovercraft
CCGS Canadian Coast Guard Ship,Christ Church Grammar School
CCH Computer-Controlled Hostile
CCIF Comité consultatif international des communications téléphoniques à grande distance (French for International Telephone Consultative Committee, merged with the CCIT in 1956 to form the CCITT)
CCII Command and Control Information Infrastructure,Community Capital Investment Initiative
CCIR Comité consultatif international pour la radio (French for Consultative Committee on International Radio, became the ITU Radiocommunication Sector, ITU-R, in 1992),commander's critical information requirement
CCIT Comité consultatif international télégraphique (French for International Telegraph Consultative Committee, merged with the CCIF in 1956 to form the CCITT)
CCITT Comité consultatif international téléphonique et télégraphique (French for International Telegraph and Telephone Consultative Committee, became the ITU Telecommunication Standardization Sector, ITU-T, in 1992)
CCK Cholecystokinin, Cocos (Keeling) Islands (ISO 3166 trigram)
CCM Canada Cycle & Motor Co. Ltd. (now split into two separate companies bearing the CCM name, one manufacturing bicycles and the other ice hockey equipment),Contemporary Christian music
CCOC Canadian Children's Opera Chorus,Crosley Car Owners Club
CCOP Coalition Common Operating/Operational Picture
CCP Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
CCPA Consumer Credit Protection Act
CCR Creedence Clearwater Revival
CCRAp Canadian Conservative Reform Alliance party
CCRP Command and Control Research Program
CCRTS Command and Control Research and Technology Symposium
CCSCS Coordinadora de Centrales Sindicales del Cono Sur
CCSCS Consultative Committee for Space Data Systems
CCSIL Command and Control Simulation Interface Language ("cecil")
CCSK Cyclic Code Shift Keying
CCT Current Commitments Team
CCTT Close Combat Tactical Trainer
cd Candela
Cd Cadmium
CD many, including Compact Disc; see entry
CD1 Cluster of Differentiation 1 (a small gene family)
CDA UK Centre for Defence Analysis
CDC Centers for Disease Control and Prevention (originally (U.S.) Communicable Disease Center),Control Data Corporation,Cult of the Dead Cow
CDD Capabilities Development Document
CDE Chemical Defence Equipment
CDEC U.S. Combat Development Experimentation Center
CDF California Department of Forestry [and Fire Protection],Common Data Format, Democratic Republic of Congo franc congolais (ISO 4217 currency code)
CDIAC Carbon Dioxide Information Analysis Center ("see-dee-ack")
CDipAF Certified Diploma in Accounting and Finance
CDL Commercial driver's license
CDM Clean Development Mechanism (Kyoto protocol),Cold Dark Matter (astronomy)
CDMA Code Division Multiple Access
CDMSII Cryogenic Dark Matter Search II
Cdr Commander
CDS Chief of the Defence Staff,Credit default swap
Cdt Commandant
CDT Central Daylight Time (UTC−5 hours)
ce Chechen language (ISO 639-1 code)
Ce Cerium
CE many, including Christian/Common Era (cf. AD); see entry
CEA Campaign Effectiveness Analysis
CECOM U.S. Army Communications and Electronics Command
CEDEX Courrier d'entreprise à distribution exceptionnelle (French, "Company Mail with Exceptional Distribution"; "exceptional" refers to the volume of mail)
CEGEP Collège d'enseignement général et professionnel (French, "College of General and Vocational Education")
CEI Competitive Enterprise Institute
CENTCOM United States Central Command
CENTO Central Treaty Organization (Baghdad Pact)
CENZUB Centre d'entraînement aux actions en zone urbaine (French, "Urban Operations Training Centre")
CEO Chief Executive Officer
CEP Circular Error Probable
CEPT (a/i) Conférence européenne des administrations des postes et des télécommunications (French, "European Conference of Postal and Telecommunications Administrations")
CERCLA U.S. Comprehensive Environmental Response, Compensation, and Liability Act of 1980
CERDEC U.S. Communications-Electronics Research, Development and Engineering Center
CERGA Centre de recherches en géodynamique et astrométrie (French, "Astrometry and Geodynamics Research Centre")
CERN Centre européen pour la recherche nucléaire (French, "European Organization for Nuclear Research")
CERT Computer Emergency Response Team
ces Czech language (ISO 639-2 code)
CESS Centre for Earth Science Studies (India)
CEV Combat Engineer Vehicle,Confédération européenne de volleyball (French, "European Volleyball Confederation"),Crew Exploration Vehicle
CEWC (a/i) Council for Education in World Citizenship
Cf Californium
CF Canadian Forces, Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
CFA Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
CFAR Christine's,Federal Acquisition Regulation
CFC ChloroFluoroCarbon,Canadian Fish Company
CFES Continuous Flow Electrophoresis System
CFFZ Call For Fire Zone
CFG Context-free grammar,Control flow graph
CFHT Canada-France-Hawaii Telescope
CFI Center for Inquiry (CSICOP)
CFL Canadian Football League,Co-ordinated Fire Line
CFLCC Coalition Forces Land Component Command
CFM Certified Facilities Manager [(IFMA)]http://www.ifma.org/
CFO Chief Financial Officer
CFP Call for papers,College Football Playoff,Common Fisheries Policy (EU)
CFR Code of Federal Regulations,Căile Ferate Române (Romanian, "Romanian Railways")
CFRP Carbon fibre reinforced plastic
CFS Chronic Fatigue Syndrome
CFSP Common Foreign and Security Policy
CFU Colony Forming Unit in Microbiology
CFV Cavalry Fighting Vehicle
CFZ Critical Friendly Zone
CG
CGDC Computer Game Developers Conference (became GDC in 1998)
CGF Computer-Generated Forces (Simulation)
CGH Comparative Genomic Hybridisation
CGIG Cross-Government Implementation Group
CGM Computer Graphics Metafile
CGO Republic of the Congo (IOC and FIFA trigram, but not ISO 3166)
CGS Chief of the General Staff
CGSI Consumer Guidance Society of India
CGT Capital Gains Tax
ch Chamorro language (ISO 639-1 code)
ch ch(L) is used to denote the Chern character of a line bundle
CH Chieftain tank-China (FIPS 10-4 country code)-Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
cha Chamorro language (ISO 639-2 code)
CHAMPUS (U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
CHAOS Cambridge Heart Anti-Oxidant Study
CHAPS Clearing House Automated Payment System
CHDK Canon Hack Development Kit (Canon camera firmware hack)
che Chechen language (ISO 639-2 code)
CHE Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
CHF Swiss franc (ISO 4217 currency code)
CHI Columbia Helicopters, Inc
CHI Computer-Human Interaction
CHiP California Highway Patrol
CHIPS Cosmic Hot Interstellar Plasma Spectrometer
CHL Chile (ISO 3166 trigram)
CHLA Core Historical Literature of Agriculture
CHN China (ISO 3166 trigram)
CHOGM Commonwealth Heads of Government Meeting
CHP California Highway Patrol-Combined Heat and Power
CHPSO California Hospital Patient Safety Organization
CHS Combat Health Support
CHT Certified Hand Therapist
chu Old Church Slavonic language (ISO 639-2 code)
chv Chuvash language (ISO 639-2 code)
CREN Christian Real Estate Network Real Estate Association
Ci Curie
CI Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram), Counter-Intelligence,101 (in Roman numerals)
CIA Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
CIAO Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
CIB Complete In Box (Internet auction/trading listings)
CIBC Canadian Imperial Bank of Commerce
CICS Customer Information Control System (IBM mainframe software; "kicks" or "C-I-C-S")
CID Combat Identification, Criminal Investigation Division,Criminal Investigations Department
CID Certified Interior Designer-A Certified Interior Designer (CID) licensed in New York (USA) plans, designs, supervises and/or consults on various aspects of interior spaces.
CIEF Comité international d'enregistrement des fréquences (International Frequency Registration Board)
CIF Cost, Insurance, and Freight (Paid) (shipping)
CIMIC Civil-Military Co-operation
CIMMYT (a/i) Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish, "International Maize and Wheat Improvement Center")
CINC Commander in Chief
CINEOS Campo Imperatore Near-Earth Object Survey
CIO Chief information officer,Congress of Industrial Organizations
CIP Combat Identification Panel
CIPE (European) Centre for International Political Economy
CIR (Commander's) Critical Information Requirements
CIR Corotating Interaction Region
CIS Canadian Interuniversity Sport, a former name of the organization now known as U Sports,Commonwealth of Independent States,Command and Information System,Communication and Information System
CISA (U.S.) C4I Integration Support Activity
CISB Complete In Sealed Box (Internet auction/trading listings)
CISPR Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
CISSP Certified Information Systems Security Professional
CITES Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ("sigh-tease")
CITS Combat Identification Training System
CIV Côte d'Ivoire (ISO 3166 trigram)
CIVETS Colombia, Indonesia, Vietnam, Egypt, Turkey, South Africa (economics)
CIVPOP Civilian Population
CIWS Close-In Weapon System
CHRS Canadian Heart Rhythm Society
CJ Cayman Islands (FIPS 10-4 country code)-Criminal Justice
CJC Canadian Jewish Congress-Cold Junction Compensation
CJD Chronological Julian Day-Creutzfeldt-Jakob disease
CJCS Chairman of the Joint Chiefs of Staff
CJO Chief of Joint Operations
CJTF Combined Joint Task Force
CK Cocos (Keeling) Islands (FIPS 10-4 country code)-Cook Islands (ISO 3166 digram)
CKA commonly known as, Canada Kicks Ass
CKND Codename: Kids Next Door
Cl Chlorine
CL Chile (ISO 3166 digram)-Co-ordination Line-One Hundred and Fifty (in Roman numerals)
CLA Clutterers Anonymous
CLEC Competitive Local Exchange Carrier
CLEMARS California Law Enforcement Mutual Aid Radio System
CLI Command Line Interface/Interpreter
CLIC Compact LInear Collider
CLO Cornell Lab of Ornithology
CLOB Character Large OBject
CLOS Command to Line-Of-Sight (missile control system)
CLOS Common Lisp Object System
CLP Chilean peso (ISO 4217 currency code)-Common [Operating/Operational] Land Picture
CLPFC CentroLateral PreFrontal Cortex
CLRP College Loan Repayment Program
Cm Curium
CM Cameroon (FIPS 10-4 country code; ISO 3166 digram), Cruise Missile, Nine Hundred (in Roman numerals)
CMA U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
CMB Cosmic Microwave Background
CMBR Cosmic Microwave Background Radiation
CME Coronal Mass Ejection (usually Sun)
CMHC Canada Mortgage and Housing Corporation
CMIIAW Correct me if I am wrong
CMIS Content Management Interoperability Services,Common management information service
CMJ Christopher Martin-Jenkins (BBC sports commentator)
CML Chemical, Chronic Myelogenous Leukemia (formerly Chronic Myeloid Leukemia)
CMLL Consejo Mundial de Lucha Libre (Spanish, "Worldwide Wrestling Council"—Mexican professional wrestling promotion)
CMM Capability Maturity Model
CMMC Corps Materiel Management Centre
CMML Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
CMO Civil-Military Operations
CMOC Civil-Military Operations Centre
CMOS Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
CMP Common [Operating/Operational] Maritime Picture
CMP Canadian Military Pattern truck (World War II)
CMPD Chronic Myeloproliferative Disease, Charlotte-Mecklenburg Police Department, Costa Mesa Police Department
CMR Cameroon (ISO 3166 trigram), Coaxial Main Rotors (helicopter type)
CMS Centers for Medicare and Medicaid Services,The Chicago Manual of Style
CMT Country Music Television
CMU Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
CMW Marconi's Wireless Telegraph Company of Canada,Canadian Manufacturing Week,Canadian Music Week,Catherine McAuley Westmead (school in New South Wales, Australia),Chicago, Missouri and Western (Railway),Compartmented Mode Workstation,Compton's Most Wanted,Continuous Microwave (processing technology),Custom Maintenance Wizard (Microsoft Office Resource Kit)
CMYK Cyan Magenta Yellow Key/blacK (colour model)
CN (i/s) Canadian National (railway; also the AAR reporting mark for said company), China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
CNA Center for Naval Analyses,Certified Network Administrator,Computer Network Attack,Continental (Casualty Company), National (Fire Insurance Company), and American (Casualty Company), the three companies that merged to form what is now known as CNA Financial
CNBC (a/i) Consumer News and Business Channel
CND Campaign for Nuclear Disarmament,Computer Network Defence
CNE Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
CNF Cost and Freight
CNI Communications, Navigation and Identification
CNI Clinical Nursing Intern
CNN Cable News Network,Cellular Nonlinear Network
CNO Computer Network Operations
CNR Canadian National Railway,Combat Net Radio
CNV Copy-Number Variable (genetics)
CNY Chinese yuan renminbi (ISO 4217 currency code)
co Corsican language (ISO 639-1 code)
Co Cobalt
CO many, including Central Office (phone company); see entry-Colorado (postal symbol)-Commanding Officer (military)
COA Certificate/Concept Of Analysis-Course Of Action (military)
COB Close Of Business [day]
COBRA Consolidated Omnibus Budget Reconciliation Act of 1985
COCOM Combatant Command (military)
COD Cash On Delivery-Democratic Republic of the Congo (ISO 3166 trigram)
CoDA Co-Dependents Anonymous
codec Coder-Decoder / Compressor-Decompressor / Compression-Decompression algorithm
COE Cab Over Engine (see truck)-Common Operating Environment (military)
COEA Cost Operational Effectiveness Analysis (military)
COEIA Combined Operational Effectiveness and Investment Appraisal (military)
COFT Conduct Of Fire Trainer (military)
COG Centre Of Gravity-Current Operations Group (military)-Republic of the Congo (ISO 3166 trigram)
COGENT Cognitive Objects within a Graphical EnviroNmenT
COIL Chemical Oxygen Iodine Laser
COIN Counter-Insurgency (military)
COK Cook Islands (ISO 3166 trigram)
COL Colombia (ISO 3166 trigram)
COLA comp.os.linux.announce-Cost Of Living Adjustment
COLT Combat Observation and Lasing Team (military)
COM Comoros (ISO 3166 trigram)-Component Object Model
COMECON Council for Mutual Economic Assistance (economic counterpart of the Warsaw Pact, 1949-1991)
COMMZ Communications Zone (military)
COMSEC Communications Security (military)
CONAD U.S. Continental Air Defense Command
CONCACAF Confederation Of North, Central American and Caribbean Association Football
CONMEBOL Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for "South American Football Confederation")
CONOPS Concept of Operations (military)
CONUS Continental United States
COO Chief Operating Officer
COP Colombian peso (ISO 4217 currency code)-Common Operating/Operational Picture
COPD Chronic obstructive pulmonary disease
COPE U.K. Committee On Publication Ethics
COPUS U.K. Committee on the Public Understanding of Science
cor Cornish language (ISO 639-2 code)
CORBA Common Object Request Broker Architecture
CORD (i/a) Common Operational Requirements Document
CORE Consortium for Oceanographic Research and Education
CORG (U.S.) Combat Operations Research Group
COROT COnvection, ROtation and planetary Transits
cos Corsican language (ISO 639-2 code)-Cosine
COS Cooper Ornithological Society
COSCOM Corps Support Command (military)
COSER COoperative SERvice
COSHH Control Of Substances Hazardous to Health (United Kingdom)
CoT Car of Tomorrow (former NASCAR race car design)
COTS Commercial Off The Shelf
Coy Company (military unit)Cow
CP Canadian Pacific-Check Point-Command Post-Club Penguin
CPA Certified Public Accountant
CPAC Conservative Political Action Conference-Cable Public Affairs Channel ("see-pack")
CPAP Center for Public Administration and Policy-Coalition for the Prevention of Alcohol Problems-Consecutive primes in arithmetic progression-Continuous positive airway pressure
CPC Certified Professional Coder, a certification from AAPC
CPCU Certified Property Casualty Underwriter
CPD Capabilities Production Document
CPE Certificate of Proficiency in English
CPE Certified Professional Ergonomist
CPF Calibration Parameter File-Canadian Patrol Frigate
CPG Clinical Practice Guideline
CPI CERDEC Command, Power and Integration
CPIM Certification on Production and Inventory Management
CPIR Computationally-Private Information Retrieval
CPON Certified Pediatric Oncology Nurse
CPPCC Chinese People's Political Consultative Conference
CPR Canadian Pacific Railway
CPR Cardiopulmonary resuscitation
CPSM Continuous Phase Shift Modulation
CPSU Communist Party of the Soviet Union
CPT Contingency Planning Team
CPU Central Processing Unit-Contract Postal Unit
CPV Cape Verde (ISO 3166 trigram)
CPX Command Post eXercise
CQ Carrier Qualification-Central Queensland-
CQD Close Quarters Drill (Morse distress code preceding SOS: CQ "calling all stations", D "Distress"; often incorrectly interpreted as "Come Quick, Distress")
cr Cree language (ISO 639-1 code)
Cr Chromium
CR Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
CRAM Combined Radiometric Correction Model
CRC Central RTI Component,Chemical Rubber Company,Christian Reformed Church,Control and Reporting Centre,Cyclic Redundancy Check, Costa Rican colón (ISO 4217 currency code),Costa Rica (IOC and FIFA trigram, but not ISO 3166)
CRD Capstone Requirements Document
cre Cree language (ISO 639-2 code)
CREB Cyclic AMP-response Element Binding (protein)
CREEP Committee for the Re-Election of the President, a pejorative nickname used by opponents
CRI China Radio International, Costa Rica (ISO 3166 trigram)
CRIPL Consolidated Remain-In-Place List
CRM Cardiac Rhythm Management-Customer Relationship Management
CRO Croatia (IOC and FIFA trigram, but not ISO 3166)
CRP Committee for the Re-Election of the President,Control and Reporting Post
CRT Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
CRTC Canadian Radio-television and Telecommunications Commission
cs Czech language (ISO 639-1 code)
Cs Caesium
CS Combat Support,Computer Scientist, Costa Rica (FIPS 10-4 country code),Serbia and Montenegro (ISO 3166 digram; obsolete since 2006)
CSA Canadian Soccer Association,Canadian Space Agency,Canadian Standards Association,Child Support Agency,Command Staff Advisor,Community-supported agriculture,Confederate States of America,Corps Storage Area, Czech Airlines,C/S/A-CINC, Service, and Agency
CSAR Combat Search and Rescue ("seessar")
CSC Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation (became DXC Technology in 2017),Computer Security Centre,CSCC Canadian Society of Clinical Chemists
CSEAL (i/a) Combat Systems Engineering and Analysis Laboratory ("see-seal")
CSERIAC (U.S. DoD) Crew Systems Ergonomics Information Analysis Center
CSG Corps Support Group
CSI see entry
CSICOP Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
CSIP Commercial Stable Image Platform (AMD)
CSIS Canadian Security Intelligence Service ("seessiss"), (U.S.) Center for Strategic & International Studies
CSK Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
CSL U.K. Central Science Laboratory
CSM see entry
CSPI Center for Science in the Public Interest
CSR Control Supply Rate
CSR Corporate Social Responsibility [1]
CSRC Conflict Studies Research Centre
CSRF Cross-Site Request Forgery
CSS Cascading Style Sheets,Catalina Sky Survey,Central Security Service,Combat Service Support,Confederate States Ship,Content-scrambling system,Cross-site scripting
CSSCS Combat Service Support Control System
CST Central Standard Time (UTC−6 hours)
CT Computed tomography (medical scan also known as a CAT scan)-Central Time zone-Chrono Trigger (Computer/Video games)-Connecticut (postal symbol)-Canterbury (postal symbol)-Chhattisgarh (Indian state code)
CTA Central African Republic (FIFA trigram, but not ISO 3166 or IOC), Chicago Transit Authority, Comando-Geral de Tecnologia Aerospacial (Portuguese, [Brazilian] "General Command for Aerospace Technology")
CTBT Comprehensive [Nuclear] Test Ban Treaty
CTC Closed Timelike Curve (relativity)-(U.S.) Combat Training Center
CTDB Compact Terrain Data Base (file format)
CTE Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984), Chronic traumatic encephalopathy
CTGF connective tissue growth factor
CTI Co-operative Target Identification
CTIL Critical Tracked Items List
CTIS Central Tire Inflation System
CTMS Clinical Trial Management System
CTO Chief Technical Officer-Chief Technology Officer
CTS Clear-To-Send-Collective Training Standards-
CTSS Compatible Time-Sharing System
CTU Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
CTVT Canine Transmissible Venereal Tumour
cu Old Church Slavonic language (ISO 639-1 code)
Cu Copper (Latin Cuprum)
CU Carrie Underwood-Cuba (FIPS 10-4 country code; ISO 3166 digram)
CUB Cuba (ISO 3166 trigram)
CUCV Commercial Utility Cargo Vehicle
CUNY City University of New York ("CUE-knee")
CUP Cuban peso (ISO 4217 currency code)
CUPE Canadian Union of Public Employees ("CUE-pee")
CUPS Common Unix Printing System
CUPW Canadian Union of Postal Workers
CUREA Consortium for Undergraduate Research and Education in Astronomy
CuW Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
CUW Curaçao (ISO 3166 trigram)
cv Chuvash language (ISO 639-1 code)
CV many, including curriculum vitae (résumé); see entry
CVCC Combat Vehicle Command and Control,Compound Vortex Controlled Combustion (1970s Honda automobile engine technology)
CVE Cape Verde escudo (ISO 4217 currency code)
CVI Combat Vehicle Identification
CVLL Crypto Variable Logic Label
CVR Cockpit Voice Recorder-Combat Vehicle Reconnaissance
CVS Concurrent Versions System
CVSD Continuous Variable Slope Delta (modulation)
CVT Continuously Variable Transmission
CW Continuous Wave-Clothes Washer-Cook Islands (FIPS 10-4 territory code)
CWC Chemical Weapons Convention
CWS Canadian Wildlife Service
CWRU Case Western Reserve University
CX Christmas Island (ISO 3166 digram)-One Hundred and Ten (in Roman numerals)
CXR Christmas Island (ISO 3166 trigram)
cy Welsh language (ISO 639-1 code)
CY Calendar year-Cyprus (ISO 3166 and FIPS 10-4 country code digram)
cym Welsh language (ISO 639-2 code)
CYM Cayman Islands (ISO 3166 trigram)
CYP Cyprus (ISO 3166 trigram)-Cyprus pound (ISO 4217 currency code)
CZ combat zone, Czech Republic (ISO 3166 and FIPS 10-4 country code digram)
CZE Czech Republic (ISO 3166 trigram)
CZK Czech koruna (ISO 4217 currency code)
CZF constructive Zermelo-Fraenkel
CZMA (US) Coastal Zone Management Act
CZW Combat Zone Wrestling
d Deci
D Deuterium
da Danish language (ISO 639-1 code)-deca
DA
DAB Digital Audio Broadcasting
DACT Data Automated Communications Terminal-Dissimilar Air Combat Training
DADVSI Loi sur le droit d’auteur et les droits voisins dans la société de l’information (French, "Law on copyrights and related rights in the information society")
DAES Defence Acquisition Executive Summary-(UK MoD) Directorate of Analysis, Experimentation and Simulation
DAF Dissolved Air Flotation, a technique used in water treatment
DAFIF Digital Aeronautical Flight Information File
DAK Disney's Animal Kingdom
dan Danish language (ISO 639-2 code)
DAO Division Ammunition Officer
DAQ Data acquisition-Delivered Audio Quality
DARE Drug Abuse Resistance Education
DARO (i/a) (U.S.) Defense Airborne Reconnaissance Office
DARPA U.S. Defense Advanced Research Projects Agency
DART Disaster Assistance Response Team-Dublin Area Rapid Transit
DAS Defensive Aids Suite
DASD (U.S.) Deputy Assistant Secretary of Defense
DASL Datapoint's Advanced Systems Language
DAU (U.S.) Defense Acquisition University
DAWN (U.S.) Drug Abuse Warning Network
dB Decibel
Db Dubnium
DB Database-Deutsche Bahn
DBA De Bellis Antiquitatis (miniature wargaming rules)
DBBL (U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
DBCS Double Byte Character Set
DBDO Desert BDO
DBE Dame Commander of the Order of the British Empire
DBF Detection By Fire (weapon launch signature)
DBM De Bellis Multitudinis (miniature wargaming rules)-Detection By Movement (military target)
DBR De Bellis Renationis (miniature wargaming rules)
DBRA Davis-Bacon Related Acts
DBS Direct Broadcast Services (television)
DC da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current, District of Columbia (postal symbol), Douglas Aircraft Company,Dublin Core,Duty Cycle,Disconnected
DCA Defensive Counter Air,Drum Corps Associates, DiChloroAcetate, Ronald Reagan Washington National Airport (IATA code)
DCAA (U.S.) Defense Contract Audit Agency
DCAS Devon and Cornwall Archery Society
DCC Dallas Christian College,Digital Command Control (model railroading),Direct Client-to-Client (Internet Relay Chat),Dismounted Close Combat
DCCP Datagram Congestion Control Protocol
DCD [Organ] Donation after Cardiac Death
DCDC Development, Concepts and Doctrine Centre
DCE Data Communication Equipment
DCFC Death Cab for Cutie
DCI Detection, Classification and Identification,Drum Corps International,Duellists' Convocation International, now known simply by the initials
DCIM Digital Camera Images
DCIMS Dental Classification Information Management System,Dismounted Combat Identification Marking System
DCL Disney Cruise Line
DCN Deacon
DCOM Disney Channel Original Movie
DCOP Desktop Communication Protocol
DCSOPS Deputy Chief of Staff for Operations and plans
DCW Digital Chart of the World
DCYSC Discovery Channel Young Scientist Challenge
DD many, including due diligence and dear daughter (increasingly prevalent on social mailing lists, blogs, and bulletin boards); see entry
DDA Digital Differential Analyzer (graphics algorithm),Digital Differential Analyzer,Deputy District Attorney
DDD Data Display Debugger,Digital Digital Digital (CD mastering)
DDL Digital Data Link
DDN U.S. Defense Data Network
DDoS Distributed Denial of Service
DDP Danish Design Prize,Deutsche Demokratische Partei (German, "German Democratic Party"-former political party in Weimar Germany),Diamond Dallas Page (American professional wrestler)
DDR Dance Dance Revolution,Deutsche Demokratische Republik (German, "German Democratic Republic" (GDR), East Germany),Double Data Rate, East Germany (ISO 3166 trigram, obsolete since 1990),DDR&E-(U.S.) Defense Department Research and Engineering
DDS Doctor of Dental Surgery
DDT Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit]
de German language (ISO 639-1 code)
DE Delaware (postal symbol)-Germany (ISO 3166 digram)
DEA Drug Enforcement Administration
DEA Drug Enforcement Agency
DEC (a/i) Department of Environmental Conservation-Digital Equipment Corporation-Disasters Emergency Committee
DeCA (U.S.) Defense Commissary Agency
DECSIM Model DEComposition and SIMulation algorithm-Directed Energy Combat SIMulation
DECT Digital European Cordless Telephone
DEFCON Defence readiness condition
DEFRA (UK) Department for Environment, Food and Rural Affairs
DELT Dual Ended Line Test (ing)
DEM Data Exchange Mechanism-Digital Elevation Model
DEN Denmark (IOC and FIFA trigram, but not ISO 3166)
DEPSECDEF (U.S.) Deputy Secretary of Defense
DERA British Defence Evaluation and Research Agency (1995-2001)
DES Deep Ecliptic Survey
deu German language (ISO 639-2 code)
DEU Germany (ISO 3166 trigram)
DF Direct Fire,Direction Finding,Distrito Federal (Spanish and Portuguese for "federal district")
DFAD Digital Feature Analysis Data ("dee-fad")
DFAS (U.S.) Defense Finance and Accounting Service
DFB Deutscher Fußball-Bund (German for "German Football Association")
DFCB Data Format Control Book
DfID UK Department for International Development
DFL Democratic-Farmer-Labor (the full designation of the Minnesota affiliate of the U.S. Democratic Party),Deutsche Fußball Liga (German for "German Football League"), the operator of the top two leagues of German football
DFM Dynamic Flowgraph Methodology
DFM (ii) Discrete Field Model
DFSP Dermatofibrosarcoma protuberans
DFTBA Don't Forget To Be Awesome-a term commonly used by the Vlogbrothers
DG Dei gratia (Latin, "by the grace of God")-Director-General-Data General
DGA Direction générale des armées (French "Armed Forces General Directorate")
DGAF (I) Don't give a f***
DGPS Differential GPS
DGZ Desired Ground Zero
DH dear husband (increasingly prevalent on social mailing lists, blogs, and bulletin boards)-Designated hitter
DHA DocosaHexaenoic Acid
DHHS (U.S.) Department of Health and Human Services
DHL Dalsey, Hillblom, and Lynn (courier service)
DHRA (U.S.) DoD Human Resources Activity
DHS U.S. Department of Homeland Security
DHSS UK Department of Health and Social Security
DHTFYSS U.S. Don't Have Time For You Silly S****
DHY Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
DIA U.S. Defense Intelligence Agency
DIAC
DiC
DICASS DIrectional Command Activated Sonobuoy System
DID Dissociative identity disorder
DILLIGAD Do I Look Like I Give A Damn? (military shorthand, slightly less offensive than the following) [2]
DILLIGAF Do I Look Like I Give A Fuck? (military shorthand; the theme of biography, album, tour, and other products of Kevin Bloody Wilson) [3]
DIF Data Interchange Format
DIFAR DIrectional Frequency Analysis and Recording
DIME Dense Inert Metal Explosive
DIMM Dual In-line Memory Module (computing)
DIN Deutsches Institut für Normung (German, "German Institute for Standardization"),Drug Identification Number (Canadian drug marketing requirement)
DINA (p/a) Diesel Nacional (Spanish, "National Diesel"—Mexican bus and truck manufacturer now known as DINA),Dirección de Inteligencia Nacional (Spanish, "National Intelligence Directorate"—former secret police of Chile)
DINKY Double Income, No Kids Yet
DIP Dual In-line Package (electronics)
DIPS Defense independent pitching statistics
DIR Defence Industrial Research
DIS Defence Intelligence Staff,(U.S.) Defense Investigative Service,Distributed Interactive Simulation,Draft International Standard (ISO)
DISA U.S. Defense Information Systems Agency,Distinguished Individual Service Award
DISCOM Division Support Command
DISE Deployable Intelligence Support Element
DISSTAF DIS Search and Target Acquisition Fidelity experiment
DITY (i/a) Do-It-Yourself
div Dhivehi language (ISO 639-2 code)
DIVAD Division Air Defence
DIY Do It Yourself
DJ Disc Jockey-Dinner Jacket-Djibouti (ISO 3166 digram; FIPS 10-4 country code)
DJD Degenerative Joint Disease-Dublin Julian Day-Discoveries in the Judaean Desert
DJF Djibouti franc (ISO 4217 currency code)
DJI Djibouti (ISO 3166 trigram)
DJS Director, Joint Staff
DK Denmark (ISO 3166 digram)
DKK Danish krone (ISO 4217 currency code)
DL Dexter's Laboratory
DLA U.S. Defense Logistics Agency-Dental Laboratories Association
DLIC Detachment Left-In-Contact
DLIR Depot-Level Inspection and Repair
DLL Dynamic Link Library
DLPMC DorsoLateral PreMotor Cortex
DLR Deutsches Zentrum für Luft-und Raumfahrt (German, German Aerospace Centre)-Docklands Light Railway
DLRP Data Link Reference Point
DLS Deep Lens Survey
DLSA (U.S.) Defense Legal Services Agency
DLSc Diploma in Library Science
DLSC U.S. Defense Logistics Services Center-U.S. Defense Logistics Support Command-
DLTBGYD Don't let the bastards grind you down
DM Dominica (ISO 3166 digram), Dungeon Master (role-playing games)
DMA Designated market area (primarily a U.S. term),U.S. Defense Mapping Agency (became NIMA, then NGA),Direct Memory Access (computing), Dominica (ISO 3166 trigram)
DMC (U.S.) Defense Management Council
DMCA Digital Millennium Copyright Act
DMD dentariae medicinae doctor (Latin, "doctor of dental medicine"),Digital Micromirror Device,Digital Multilayer Disk
DMI Desktop Management Interface (computing)
DMM Digital Multimeter
DMOC Distributed Mission Operations Centre
DMOS (i/a) Double Diffused MOS transistor ("dee-moss")
DMPA (U.S.) Defense Medical Programs Activity
DMPFC DorsoMedial PreFrontal Cortex
DMPK Drug Metabolism and Pharmacokinetics
DMRB Design Manual for Roads and Bridges
DMS U.S. Defense Message System
DMSO Dimethyl sulfoxide, U.S. Defense Modeling & Simulation Office ("dim-so"), now Modeling and Simulation Coordination Office
DMSP U.S. Defense Meteorological Satellite Program
DMT Dimethyltryptamine
DMU Diesel Multiple Unit, a method of connecting self-propelled railway vehicles together to form a train under the control of one driver.
DMV Department of Motor Vehicles
DMZ DeMilitarized Zone
DN Deacon
DNA U.S. Defense Nuclear Agency,Deoxyribonucleic acid,Douglas Noël Adams
DNAW Day Night All Weather
DND Department of National Defence (Canada)-Do not disturb
DNDi Drugs for Neglected Diseases initiative
DNDO U.S. Domestic Nuclear Detection Office
DNM Defence Nuclear Material
DNK Denmark (ISO 3166 trigram)
DNR Do not resuscitate
DNS Domain name system
DO Dominica (FIPS 10-4 country code)-Dominican Republic (ISO 3166 digram)-Doctor of Osteopathic Medicine
DOA Dead On Arrival-Dead or Alive
DOB Date Of Birth
DoCRA Duty of Care Risk Analysis Standard
DOD U.S. Department of Defense
DODAF U.S. Department of Defense Architectural Framework
DoDD U.S. Department of Defense Directive
DoDEA (U.S.) Department of Defense Education Activity
DOE (i/a) U.S. Department of Energy
DOHC Dual-OverHead-Cam engine
DOI Digital Object Identifier-U.S. Department of the Interior
DOM Deo optimo maximo (Latin, "to God, the best and greatest")-Document Object Model-Dominican Republic (ISO 3166 trigram)
DOMS (U.S.) Director of Military Support
DOP Dominican peso (ISO 4217 currency code)
DORA Defence of the Realm Act
DOS Denial of Service (DoS, cf. DDoS)-Density of State-Disk Operating System
DOT Department of Transportation (U.S. federal or state)-Damage Over Time (common in World of Warcraft)
DOTA short-form for DEFENSE OF THE ANCIENTS a popular online epic game
DotD Deal of the Day (marketing gimmick)
DOTMLPF Doctrine, Organization, Training, Materiel, Leadership, Personnel, and Facilities (mnemonic)
DOW Died of Wounds
DP Division de production (Algerian petroleum company)
DP Decision Point-Dynamic Programming
DPA UK Defence Procurement Agency
DPCO Double-Pole Change Over
DPDT Double-Pole Double-Throw
DPICM Dual-Purpose Improved Conventional Munition
DPKO UN Department for Peacekeeping Operations
DPMO (U.S.) Defense Prisoner of War/Missing Personnel Office
DPPDB Digital Point Positioning Database
DPRE Displaced Person or Refugee (plural Displaced Persons and Refugees) (originally Displaced Persons, Refugees, Evacuees)
DPRK Democratic People's Republic of Korea
DPST Double-Pole Single-Throw
DQ Dairy Queen-Jarvis Island (FIPS 10-4 country code)
DR Dead Reckoning-Dominican Republic (FIPS 10-4 country code)-Danmarks Radio (Danish Broadcasting Corporation)
DRA Defence Research Agency (UK, 1991-1995)-Democratic Republic of America
DRAGN Double Radio source Active Galactic Nucleus ("dragon")
DRAM Dynamic Random Access Memory ("dee-ram") (computing)
DRC Democratic Republic of the Congo
DRDC Defence Research & Development Canada
DREA (i/a) Defence Research Establishment Atlantic (obsolete 2002)
DRES (i/a) Defence Research Establishment Suffield (obsolete 2002)
DRET (i/a) Defence Research Establishment Toronto (obsolete 2002)
DREV (i/a) Defence Research Establishment Valcartier (obsolete 2002)
DRI Detection, Recognition, Identification-Dietary Reference Intake
DRIC (i/a) (U.S.) Defense Research Information Center
DRL Daytime Running Lights-Dorman Roberts Ltd.
DRM Digital Rights Management
DRMS (U.S.) Defense Revitalization and Marketing Service
DRPR Drawing Practices
DRT Document Related Technologies
Ds Darmstadtium
DS Dear son (increasingly prevalent on social mailing lists, blogs, and bulletin boards),Defence Scientist,Direct Support, Dust Storm (METAR Code)
DSA (U.S.) Defense Support Activities,Division Support Area
DSAA (U.S.) Defense Security Assistance Agency,Driving Schools Association of the Americas,DECT Standard Authentication Algorithm
DSAS Disney Sing Along Songs
DSB (U.S.) Defense Science Board
DSC Differential Scanning Calorimeter,Digital Selective Calling,Digital Still Camera,Distinguished Service Cross,Doctor of Surgical Chiropody (obsolete),Document structure convention (PostScript programming),Dynamic Stability Control
DSCS U.S. Defense Satellite Communications System
DSCSOC DSCS Operations Center
DSD Defence Studies Department (King's College, London)
DSDS Deutschland sucht den Superstar (German, "Germany Seeks the Superstar"), the German version of the Idol series
DSE -Dry Sheep Equivalent
DSG Direct-Shift Gearbox
DSID Dismounted Soldier Identification System
DSL Digital Subscriber Line
DSLR Digital single-lens reflex (camera)
DSM Diagnostic and Statistical Manual of Mental Disorders
DSN Deep Space Network
DSO Distinguished Service Order (British military decoration)
dsp decessit sine prole (Latin, "died without issue")-genealogy short-hand
dspl decessit sine prole legitima (Latin, "died without legitimate issue")
dspm decessit sine prole mascula [superstite] (Latin, "died without surviving male issue" )
dspml decessit sine prole mascula legitima (Latin, "died without legitimate male issue")
dspms decessit sine prole mascula superstite (Latin, "died without surviving male issue")
dsps Decessit sine prole superstite (Latin, "died without surviving issue")
DSP Defense Standardization Program,Defense Support Program,Digital Signal Processing
DSPL Design Specialists and Plans Language
DSR Deformed Special Relativity
DSRV Deaf Sports Recreation Victoria,Deep Submergence Rescue Vehicle
DSS Digitized Sky Survey,Discarding-Sabot Shell (ammunition)
DST
DSTL British Defence Science and Technology Laboratory
dsvp d.s.v.p. decessit sine vitae patria (Latin, "died within fathers lifetime")
DSWA (U.S.) Defense Special Weapons Agency
DTA Dental Technologists Association
DTD Digital Terrain Data
DTE Data Terminal Equipment-Down To Earth
DTED Digital Terrain Elevation Data ("dee-ted")
DTG Date-Time Group
DTH Direct To Home (television)
DTI UK Department of Trade and Industry
DTIC (U.S.) Defense Technical Information Center
DTL diode-transistor logicc (electronics)
DTM Deutsche Tourenwagen Masters (German, "German Touring Car Masters"-a current motor racing series),Deutsche Tourenwagen Meisterschaft (German, "German Touring Car Championship"-a defunct motor racing series)
DTMF Dual-tone multi-frequency signaling
DTLOMS Doctrine, Training, Leader development, Organization, Materiel, and Soldier (mnemonic)
DTO Disruptive Technology Office (was ARDA)
DTOMLS Doctrine, Training, Organization, Materiel, Leader and Soldier development (mnemonic)
DTR Determine The Relationship
DTRA Defense Threat Reduction Agency ("deet-ra")
DTSA (U.S.) Defense Technology Security Administration (ii) Defend Trade Secrets Act
DU Depleted Uranium, Dust (METAR Code)
DUI Data Use Identifier,Data Use Institute,Davis Unified Ignition,Diving Unlimited International,Documento Único de Identidad,Documento Unico de Importación,Driving Under the Influence,Duke University Improv
DUMBO Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
DUSD (U.S.) Deputy Under-Secretary of Defense
dv Dhivehi language (ISO 639-1 code)
DV Daily Value (FDA food guide),Deo volente (Latin, "God willing")
DVD Digital Versatile Disk (was Digital Video Disk)
DVLC UK Driver and Vehicle Licensing Centre
dvm decessit vita matris (Latin, "died in the lifetime of the mother")
DVM Doctor of Veterinary Medicine
DVO Direct View Optics
DVOM Digital Volt-Ohm Meter
DVP various meanings (disambiguation page)
dvp decessit vita patris (Latin, "died in the lifetime of the father")
dvu decessit vita uxoris (Latin, "died in the lifetime of spouse")
DW Drum Workshop
DWG Divisional Wargame (military simulation)
DWI Dance With Intensity-Danish West Indies-Diffusion-weighted imaging-
DWM Doctor Who Magazine
DWIM Do What I Mean
DWTS Dancing with the Stars
DWW Down with Webster
DX Dexterity (role-playing games), DeXtrorphan,Distant (radio), D-Generation X (professional wrestling stable)
DXA Dual-energy X-ray Absorptiometry
DXM DeXtroMethorphan
Dy Dysprosium
DY Dahomey (ISO 3166 digram; obsolete since 1977)
dz Dzongkha language (ISO 639-1 code)
DZ Algeria (ISO 3166 digram)-Drizzle (METAR Code)-Drop Zone
DZA Algeria (ISO 3166 trigram)
DZD Algerian dinar (ISO 4217 currency code)
dzo Dzongkha language (ISO 639-2 code)
E East
EA Electronic Attack-Emotions Anonymous-Engagement Area-
EABU Explain Acronyms Before Use
EAC Echelons Above Corps
EAFUS "Everything" Added to Food in the United States (FDA list)
EAPC Euro-Atlantic Partnership Council
EASA European Aviation Safety Agency
EAST Experimental Advanced Superconducting Tokamak
EBCDIC (a/i) Extended Binary Coded Decimal Interchange Code (pronounced "eb-see-dik") (cf. BCD)
EBD Electronic Brake Distribution
EBE Extraterrestrial Biological Entity
EBO (i/a) Effects Based Operations,Encyclopædia Britannica Online,European Board of Ophthalmology
EBSA Employee Benefits Security Administration
EBT Earnings Before Taxes,Electronic Benefit Transfer
EBW Electron Beam Welding,Exploding BridgeWire,EC[edit]
EC Ecuador (ISO 3166 digram; FIPS 10-4 country code), Electronic Combat,European Community (see EEC), Exacoulomb
EC2 Many, some as an alternative to EC2, e.g., Elastic Compute Cloud
ECB England (and Wales) Cricket Board,European Central Bank
ECBR European Coalition for Biomedical Research
ECASS European Centre for Analysis in the Social Sciences [1]
ECCM Electronic Counter-Counter-Measures
ECFS Electronic Case Filing System
ECG Electrocardiogram
ECHO Each Community Helps Others (EPA programme),Educational Concerns for Hunger Organization,European Commission Host Organization,European Commission Humanitarian aid Office, Exchange Clearing House,Expanded Characteristic Option, Explanatory Coherence by Harmony Optimization
ECHR European Convention on Human Rights
ECJ European Court of Justice
ECL Emitter Coupled Logic (electronics)
ECM Electronic Counter-Measures,Enterprise Content Management
ECommHR European Commission on Human Rights
ECOWAS Economic Community of West African States
ECS Emergency Contact System,Enhanced Chip Set (computing),EOSDIS Core System,Extended Chip Set (computing)
ECSC European Coal and Steel Community (distant ancestor of the EU)
ECT ElectroConvulsive Therapy
ECtHR European Court of Human Rights
ECU Ecuador (ISO 3166 trigram), European Currency Unit (ancestor of the euro)
ECW Eastern Championship Wrestling/Extreme Championship Wrestling,ED[edit]
EDA European Defence Agency
EDAC Error Detection And Correction
EDCS Environmental Data Coding Specification
EDD Earliest due date,Electron-detachment dissociation,Elena Delle Donne (American basketball player),Employment Development Department (California state agency),End-diastolic dimension,Expected Date of Delivery (pregnancy)
EDECSIM Extended Directed Energy Combat Simulation
EDGAR Electronic Data Gathering, Analysis, and Retrieval (U.S. Securities and Exchange Commission filings database)
EDH Eastman Dental Hospital
EDS Electronic Data Systems,Electronic Differential System
EDSA Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
EDT Eastern Daylight Saving Time (UTC−4 hours)
EDTA Electric Drive Transportation Association, EthyleneDiamineTetraAcetic acid,EE[edit]
ee Ewe language (ISO 639-1 code)
EE Estonia (ISO 3166 digram; from the country's native name of Eesti), Electrical engineering,Electrical Engineer,E&E-Escape and Evasion (training)
EEC European Economic Community (predecessor of the EU)
EEG ElectroEncephaloGram
EEK Estonian kroon (ISO 4217 currency code)
EENT End Evening Nautical Twilight
EEO -Equal Employment Opportunity
EEOC -(U.S.) Equal Employment Opportunity Commission
EEZ Economic Exclusion Zone or Exclusive Economic Zone
EF Electro-focus (Canon lens mount),Entry Foyer, Exafarad
EFF Electronic Frontier Foundation
EFL English as a Foreign Language
EFM Enterprise Feedback Management
EFOA European Fuel Oxygenates Association
EFSA European Food Safety Authority
EFT Electronic Fund Transfer
EFTA European Free Trade Area, European Free Trade Association
EFV Expeditionary Fighting Vehicle
EG Egypt (ISO 3166 digram; FIPS 10-4 country code)
EGBUS External Genitalia, Bartholin's glands, Urethra & Skene's glands
EGCG EpiGalloCatechin-3-Gallate
EGIS Erieye Ground Interface Segment
EGP Egyptian pound (ISO 4217 currency code)
EGRET Energetic Gamma-Ray Experiment Telescope
EGY Egypt (ISO 3166 trigram)
EH Exahenry-Western Sahara (ISO 3166 digram)
EHA Education for All Handicapped Children Act (U.S. federal legislation; since superseded by the Individuals with Disabilities Education Act), Emotional Health Anonymous
EHF Extremely High Frequency
EHR Equipment History Record
Ei Exbi
EI Ireland (FIPS 10-4 country code; from Éire)
EIA Environmental Impact Assessment
EIAH Environnements Informatiques pour l'Apprentissage Humain
EIAH Encyclopedia of Iranian Architectural History
EIC East India Company
EICS East India Company's Service
eID electronic ID
EIRP Effective Isotropic Radiated Power
EIS Environmental Impact Statement
EJ Exajoule
EK Equatorial Guinea (FIPS 10-4 country code)-Exakelvin
EKG Electrocardiogram (from German Elektrokardiogramm)
EKMS Electronic Key Management System
el Greek language (ISO 639-1 code)
EL Exalitre
ELF (a/i) Earth Liberation Front,Endangered Language Fund,Eritrean Liberation Front,Executable and Linkable Format,Extremely Low Frequency
ELINT Electronic Intelligence
ell Greek language (ISO 639-2 code)
ELL English Language Learner
ELM Edge-Localised Mode (plasma physics)
ELO Electric Light Orchestra
ELP Emerson, Lake & Palmer,European Left Party
ELSS Emergency Life Support Stores
ELT Emergency Locator Transmitter
Em Exametre
EM ElectroMagnetism/ElectroMagnetic
EMA (i/a) European Medicines Agency
Embraer Empresa Brasileira de Aeronáutica (Portuguese, "Brazilian Aeronautics Company")
EMC Electric Membership Corporation,Electromagnetic Compatibility,Electro-Motive Corporation,European Muon Collaboration,Evergreen Marine Corporation
EMCON (Electromagnetic) Emissions Control
EMD General Motors Electro-Motive Division,Engineering and Manufacturing Development,European Missile Defence
EMDEX Essential Medicines InDEX
EMDG Euro-Missile Dynamics Group
EMDR Eye Movement Desensitisation and Reprocessing
EMEA Europe, Middle East and Africa
EMF Electromotive force,Epsom Mad Funkers (1990s-2000s indie dance band)
EMG ElectroMyoGraph
EMO Emergency Measures Organisation-Emotional
EMP ElectroMagnetic Pulse
EMS Emergency Medical Services
EMT Emergency Medical Technician
EMU Electric Multiple Unit-a method of connecting self-propelled railway vehicles together to form a train under the control of one driver.
EMV Europay, MasterCard, Visa (the companies that developed the current technical standard for chipped payment cards and contactless cards)
en English language (ISO 639-1 code)
EN Corps of Engineers, Estonia (FIPS 10-4 country code),Exanewton
ENCODE Encyclopedia of DNA Elements (human genome data project)
ENE East North-East
eng English language (ISO 639-2 code)
ENG England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
ENSATT École nationale supérieure des arts et techniques de théâtre (French, "Higher National School of Theatrical Arts and Techniques")
ENT Ear, Nose and Throat
ENTEC Euro NATO Training Engineer Centre
ENVL Envelope
ENY Enemy
eo Esperanto language (ISO 639-1 code)
EO Electro-Optics,Engagement Operations
EOD Explosive Ordnance Disposal
EOG ElectroOculoGraphy
EOS Earth Observation Satellite,(a/i) Electro-Optical System, Canon's autofocusing system for film and digital SLR cameras, Electrophoresis Operations in Space, a space manufacturing project of the McDonnell Douglas Astronautics Company
EOSAT Earth Observation Satellite
EOSDIS (a/i) Earth Observation Satellite Data and Information System
EOTS Electro-Optical Tactical Sensor,(a/i) Eye Of The Storm (World of Warcraft)
EOM End of Message
EP European Parliament
EP Extended play
EPA EicosaPentaenoic Acid, Environmental Protection Agency
EPCOT Experimental Prototype Community Of Tomorrow
EPCR Endothelial protein C receptor,European Professional Club Rugby
EPFL École polytechnique fédérale de Lausanne (French, "Lausanne Federal Institute of Technology")
EPGS EOS Polar Ground Sites
EPIRB (a/i) Emergency Position Indicating Radio Beacon
EPL English Premier League
EPLRS Enhanced Position Location Reporting System ("ee-plarz")
epo Esperanto language (ISO 639-2 code)
EPO Ellinikí Podosferikí Omospondía (Greek Ελληνική Ποδοσφαιρική Ομοσπονδία, translated as "Hellenic Football Federation"),European Patent Organisation or its main organ, the European Patent Office, Erythropoietin
EPOS Electronic Point Of Sale
EPPA Employee Polygraph Protection Act
EPR European Pressurised [Nuclear] Reactor
EPW Earth Penetrator Weapon/Warhead,Economic and Political Weekly (Indian publication),Enemy Prisoner of War,EQ[edit]
EQ Emotional Quotient
EQG Equatorial Guinea (FIFA trigram, but not IOC or ISO 3166)
Er Erbium
ER Emergency Room, Eritrea (ISO 3166 digram; FIPS 10-4 country code)
ERA Earned run average,Engineering Research Associates,Equal Rights Amendment,English Racing Automobiles,European Railway Agency
ERCIM (a/i) European Research Consortium for Informatics and Mathematics
ERI Eritrea (ISO 3166 trigram)
ERLAWS Eastern Ruapehu Lahar Alarm and Warning System
ERN Eritrean nakfa (ISO 4217 currency code)
EROS Earth Resources Observation System
ERP Engineer Regulating Point
ERR Eesti Rahvusringhääling
ERS Earth Resources Survey
ERTS Earth Resources Technology Satellite (became Landsat)
ERV Endogenous RetroVirus
es Spanish language (ISO 639-1 code)
Es Einsteinium,Exasecond
ES El Salvador (FIPS 10-4 country code), Electronic warfare Support, Exasiemens,Spain (ISO 3166 digram; from the country's native name of España)
ESA Electro-Spark Alloying,Endangered Species Act,European Space Agency
ESC Embryonic Stem Cell,Electronic Stability Control
ESD ElectroStatic Discharge
ESDP European Security and Defence Policy
ESE East South-East
ESH Western Sahara (ISO 3166 trigram)
ESL English as a Second Language
ESM Electronic warfare Support Measures
ESO European Southern Observatory
ESOL English for Speakers of Other Languages
ESP Electronic Stability Program,Extra-sensory perception, Spain (ISO 3166 trigram)
ESPGHAN European Society for Paediatric Gastroenterology, Hepatology and Nutrition
ESPN Entertainment and Sports Programming Network
est Estonian language (ISO 639-2 code)
EST Eastern Standard Time (UTC−5 hours), Estonia (ISO 3166 trigram)
ESU Emergency Services Unit
ESV Engineer Support Vehicle
et Estonian language (ISO 639-1 code)
ET Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
Exatesla Extra Terrestrial
ETA Estimated Time of Arrival, Euzkadi Ta Azkatasuna ("etta", Basque, "Basque Homeland and Freedom"),et al.-et alii/aliae/alia (Latin, "and others")
ETB Ethiopian Birr (ISO 4217 currency code)
ETF Emergency Task Force (a special police unit, also jocularly said to stand for Extra-Thick Fuzz)
ETH Ethiopia (ISO 3166 trigram)
ETI Extra-Terrestrial Intelligence
ETLA Extended TLA
ETM Electronic Technical Manual,Enhanced Thematic Mapper
ETOPS Extended-range Twin-engine Operational Performance Standards (aviation)
ETT Embedded Training Team
eu Basque language (ISO 639-1 code)
Eu Europium
EU Europa Island (FIPS 10-4 country code), European Union
EUCOM (U.S.) European Command
EULA End-User License Agreement ("you-lah")
EUR euro (ISO 4217 currency code)
eus Basque language (ISO 639-2 code)
EUUSA European Union and United States of America
EV Exavolt
EVA Earned Value Analysis,Economic value added,Ethylene-Vinyl Acetate,Extra-Vehicular Activity
EVIL Electronic viewfinder (with) interchangeable lens (a type of digital camera)
EW Electronic Warfare-Exawatt
ewe Ewe language (ISO 639-2 code)
EWR Newark Liberty International Airport (IATA airport code)
EWSD Elektronisches Wählsystem Digital (German, "Electronic Digital Switching System")
EWTN Eternal Word Television Network
EXFOR Experimental Force (military)
EXREP Expeditious Repair (SM&R code)
EYD Ejaan Yang Disempurnakan (Indonesian, "Perfected Spelling System", used officially in Indonesia since 1972),Eurovision Young Dancers,EZ[edit]
EZ Czech Republic (FIPS 10-4 country code)-Extraction Zone
EZLN Ejército Zapatista de Liberación Nacional (Spanish, "Zapatista Army of National Liberation")
f Femto
F Farad-Fluorine
fa Persian language (ISO 639-1 code)
FA Food Addicts in Recovery Anonymous
fA Femtoampere
FA Field Artillery,Financial aid,Football Association (England)
FAA U.S. Federal Aviation Administration,Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
FAAD Forward Area Air Defence
FAADEZ Forward Area Air Defence Engagement Zone
FAAN Fellow of the American Academy of Neurology
FAAFP Fellow of the American Academy of Family Physicians
FAAN Fellow of the American Academy of Nursing
FAANG Facebook, Amazon, Apple, Netflix, Google (the leading stocks in the late-2010s US market rally) (c.f. FANG, which originally did not include Apple)
FAAQ (a/i) Frequently Asked and Anticipated Questions (cf. FAQ)
FAASV Field Artillery Ammunition Supply Vehicle
FAB Feline Advisory Bureau (UK feline charity)
FAC Forward Air Controller,Front of Allies for Change,Frontal Affinity Chromatography,Full Aperture Calibrator
FACA (US) Federal Advisory Committee Act
FACH Fuerza Aérea de Chile
FACN Fellow of the American College of Nutrition
FACP Fellow of the American College of Physicians
FACS Fellow of the American College of Surgeons, Formal Aspects of Computing Science,Fluorescent-activated cell sorting
FACTS Flexible Alternating Current Transmission System
FAD Flavin Adenine Dinucleotide,Fuck A Duck, Funding Authorization Document,M18 FADAC-Field Artillery Data Computer
FAH Federation of American Hospitals,Fine Arts and Humanities,Foreign Affairs Handbook
FAI Fédération Aéronautique Internationale (French, "International Aeronautics Federation"),Football Association of Ireland
FAM Foreign Affairs Manual
fao Faroese language (ISO 639-2 code)
FAO Food and Agriculture Organization
FAPA Fellow of the American Psychological Association
FAPHA Fellow of the American Public Health Association
FAQ (a/i) Frequently Asked Questions (sometimes pronounced "fak")
FARC Fuerzas Armadas Revolucionarias de Colombia (Spanish, "Revolutionary Armed Forces of Colombia")
FARDC "Military of the Democratic Republic of the Congo
FARP Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
fas Persian language (ISO 639-2 code)
FAS Federation of American Scientists,Fetal Alcohol Syndrome
FASCAM Family of Scatterable Mines[1]
FASD Fetal Alcohol Spectrum Disorder
FASEB (a/i) Federation of American Societies for Experimental Biology
FAST Face, Arm, Speech, Time (stroke symptoms),Five hundred meter Aperture Spherical Telescope (Chinese radio telescope),Fixing America's Surface Transportation Act (U.S. legislation)
FAT Field Artillery Tractor-File Allocation Table
FAVS Future Armoured Vehicle System
FAW Football Association of Wales
FB Facebook, An on-line social network
FBCS Fellow of the British Computer Society
FBI Federal Bureau of Investigation
FBIS Foreign Broadcast Information Service
FBIDST Fellow of the British Institute of Dental and Surgical Technologists
FBM Board foot
FBR Fast Breeder Reactor,Foundation for Biomedical Research,Friedman, Billings, Ramsey (now known as Arlington Asset Investment)
FBS Federal Bureau of Statistics (Pakistan),Fetal bovine serum,Football Bowl Subdivision (U.S. college football),Fukuoka Broadcasting Corporation,FC[edit]
fC Femtocoulomb
FC Fire Control,Football Club, Funnel Cloud (METAR Code)
FCA Fellowship of Christian Athletes,Fiat Chrysler Automobiles,Fraction of Combat Active forces
FCC U.S. Federal Communications Commission
FCE First Certificate in English
FCF Financial Free Cash Flow
FCLA Fraud Claims Law Associate
FCM Federation of Canadian Municipalities,Fogarty's Cove Music
FCO UK Foreign and Commonwealth Office
FCS Football Championship Subdivision (U.S. college football),Future Combat System
FCW Florida Championship Wrestling
FCZ Forward Combat Zone
FD Falun Dafa
FDA Food and Drug Administration (U.S.)
FDC Federal Detention Center (U.S.)-Fire Direction Centre
FDDI Fibre Distributed Data Interface
FDBK (I) Feedback
FDR Flight Data Recorder-Franklin Delano Roosevelt
Fe Iron (Latin Ferrum)
FE Fully Exposed (armoured vehicle target, as opposed to Hull-Down)
FEAR First Encounter Assault Recon-False Evidence Appears Real
FEAST (a/i) Forum for European-Australian Science and Technology Cooperation
FEATS Festival of European Anglophone Theatrical Societies[2]
FEB Federación Española de Baloncesto (Spanish, "Spanish Basketball Federation"),Federatie Eredivisie Basketball (Dutch, "Federation Honorary Division (of) Basketball"), the former name of the basketball competition now known in Dutch by the English-language Dutch Basketball League,Força Expedicionária Brasileira (Portuguese, "Brazilian Expeditionary Force")
FEBA Forward Edge of the Battle Area
FED (a/i) Field emission display
FEDEP Federation Development Process (Simulation)
FEF Frontal Eye Field (neurophysiology)
FEI Fédération équestre internationale (French, "International Federation for Equestrian Sports")
FEMA (a/i) Farm Equipment Manufacturers Association,(a/i) U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
FEMEXFUT Federación Mexicana de Fútbol Asociación (Spanish, "Mexican Association Football Federation")
FENAFUTH Federación Nacional Autónoma de Fútbol de Honduras (Spanish, "National Autonomous Football Federation of Honduras")
FENS (a/i) Federation of European Neuroscience Societies
FEP Firepower Enhancement Program-Fleet satellite (FLTSAT) Extremely high frequency (EHF) Package
FEPAFUT Federación Panameña de Fútbol (Spanish, "Panamanian Football Federation")
FES Flywheel Energy Storage
FEST Frankfurt English Speaking Theatre[3]
FET Field-effect transistor
FEZ (a/i) Fighter Engagement Zone
ff Fula language (ISO 639-1 code)
fF Femtofarad
FF Final Fantasy, Firefox (Web browser)
FFA Football Federation Australia,Pacific Islands Forum Fisheries Agency,Free-Fire Area,Fusiform Face Area,Future Farmers of America (today the National FFA Organization)
FFB Frum From Birth (referring to an observant Jew born into a religiously observant family)
FFC Free For Chat
FFE Fukuoka Futures Exchange
FFF Fédération française de football (French, "French Football Federation")
FFG Guided Missile Frigate (hull classification symbol)
FFOV Forward Field Of View
FFR Fédération française de rugby (French, "French Rugby (Union) Federation")
FFS For Fuck's Sake
FFT Fast Fourier Transform,Final Fantasy Tactics,FG[edit]
FG Falun Gong
fg Femtogram
FG Fog (METAR Code)-French Guiana (FIPS 10-4 territory code)
FGR Flickr Group Roulette
fH Femtohenry
FHFIF Foster's Home for Imaginary Friends
FHI Family Health International, Fuji Heavy Industries, Ltd.
fi Finnish language (ISO 639-1 code)
FI Finland (ISO 3166 digram; FIPS 10-4 country code)
FIA Fédération internationale de l'automobile (French "International Automobile Federation")
FIAT Fabbrica Italiana Automobili Torino (Italian "Italian Car Factory of Turin")
FIB Fucking Illinois Bastard (Wisconsin slang, variants exist)
FIBA originally Fédération internationale de basket-ball amateur (French, "International Amateur Basketball Federation"); since 1989, Fédération internationale de basket-ball
FIBUA (i/a) Fighting In Built-Up Areas
FIC Fellowship for Intentional Community
FID Foreign Internal Defence
FIE Fly-In Echelon
FIFA Fédération internationale de football association (French, "International Association Football Federation")
FIFe Fédération internationale féline (French, "International Feline Federation")
FIFO First In, First Out
FIFRA Federal Insecticide, Fungicide, and Rodenticide Act
FIG Fédération internationale des géomètres (French, "International Federation of Surveyors"),Fédération internationale de gymnastique (French, "International Federation of Gymnastics"),Feminist Improvising Group (music ensemble)
FIGJAM Fuck I'm Good, Just Ask Me
fij Fijian language (ISO 639-2 code)
FILA Fédération internationale des luttes associées (French, "International Federation of Associated Wrestling Styles"), former name of the sport governing body now known as United World Wrestling
FILO First In, Last Out (see also LIFO)
FIMPT Fellow of the Institute of Maxillofacial Prosthetists and Technologists
fin Finnish language (ISO 639-2 code)
FIN Finland (ISO 3166 trigram)
FINA (p/a) Fédération internationale de natation (French, "International Swimming Federation")
FIPS Federal Information Processing Standard
FIR Final Inspection Report,Federazione Italiana Rugby (Italian, "Italian Rugby (Union) Federation")
FIRES Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
FIS (a/i) Fédération internationale de ski (French "International Ski Federation")
FISA Fédération Internationale des Sociétés d'Aviron (French, "International Federation of Rowing Associations")
FISH Fluorescence In-Situ Hybridisation
FiST Fire Support Team
FITS Flexible Image Transport System
FIU Florida International University
fj Fijian language (ISO 639-1 code)
fJ Femtojoule
FJ Fiji (ISO 3166 digram; FIPS 10-4 country code)
FJD Fiji dollar (ISO 4217 currency code)
FJI Fiji (ISO 3166 trigram)
FJN Financial Job Network
fK Femtokelvin
FK Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
FKP Falkland Islands pound (ISO 4217 currency code)
FKSM Fort Knox Supplemental Manual
FKT Fastest Known Time
fl floruit (Latin, "living") (genealogy)
fL Femtolitre
FL Florida (postal symbol)
FLA Florida-Front Line Assembly-Future Large Aircraft
FLAC (a/i) Free Lossless Audio Codec
FLAC (a/i) Free Legal Advice Centres
FLAK FLugAbwehrKanone (German for "Anti-Aircraft Guns")
FLB Forward Logistics Base
FLET (a/i) Forward Line of Enemy Troops
FLG Falun Gong
FLIP Flight Information Publication
FLIR Forward Looking InfraRed (sensor)
FLK Falkland Islands (ISO 3166 trigram)
FLOT (a/i) Forward Line of Own Troops
FLSA Fair Labor Standards Act
FLQ Front de libération du Québec (French for "Québec Liberation Front")
FLQ Free Legal Questions
FLTSAT Fleet Satellite
FLTSATCOM Fleet Satellite Communication System
FLUBOS Fat, Lazy, Useless, Bag Of Shit
FM Factory Mutual http://fmglobal.com
fm Femtometre
Fm Fermium
FM Federal Magistrate (Australian post-nominal), Federated States of Micronesia (postal symbol; ISO 3166 digram; FIPS 10-4 territory code), Field Manual,Flight Manager,Frequency Modulation (electronics)
FMC Federal Magistrates' Court (an Australian federal court, formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
FMCA Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
FMCAfam Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
FME Formal Methods Europe
FMECA Failure Modes and Effect Criticality Analysis
FMJD Fédération Mondiale du Jeu de Dames[4]
FMLA Family Medical Leave Act
Fmr Former (as in "Fmr. president")
fMRI Functional Magnetic Resonance Imaging
FMS Federal Magistrates Service (an Australian federal court, now FMC), Flight Management System,Foreign Military Sales
FMSF False Memory Syndrome Foundation
FMTV Family of Medium Tactical Vehicles
FMCG (Fast-Moving Consumer Goods)
fN Femtonewton
FNA Functional Needs Analysis
fo Faroese language (ISO 639-1 code)
FO
FOAD Fuck Off And Die
FOAF Friend Of A friend
FoB Free On Board (shipping)
FOB (i/a) Forward Operating Base
FOC Full Operational Capability-First of Class
FoE Friends of the Earth
FOGC Federal Oil and Gas Council
FOH Front Of House
FOIA Freedom of Information Act
FOM Federation Object Model
FONSI Finding of No Significant Impact
FOO Forward Observation Officer
FOR Field Of Regard-Frame Of Reference
Fortran The IBM Mathematical FORmula TRANslating System (programming language)
FOS Florida Ornithological Society-Full Operational Status
FoS Family of Systems
FOSE Fallout 3 Script Extender
FOSE Federal Office Systems Expo
FOT Free on truck
FOTA Fellow of the Orthodontic Technicians Association
FOTC Flight of the Conchords
FOUO For Official Use Only
FOV Field Of View
FP French Polynesia (FIPS 10-4 territory code)
FPF Federação Portuguesa de Futebol ("Portuguese Football Federation" in that language),Final Protective Fire
fps frames per second (motion pictures, television, computer graphics)
FPS Fire Prevention System,First Person Shooter (computer/video games)
FOOP Friends Of Organ Pipes (Volunteer group)
FQ Baker Island (FIPS 10-4 territory code)-French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
FQDN Fully Qualified Domain Name
fr French language (ISO 639-1 code)
Fr Francium
FR France (FIPS 10-4 country code; ISO 3166 digram)
fra French language (ISO 639-2 code)
FRA Federal Railroad Administration, France (ISO 3166 trigram)
FRAGO Fragmentary Order (military)
FRAND Fair, reasonable, and non-discriminatory (concept in standards-setting and intellectual property law)
FRCP Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
FRICBM Full Range ICBM
frr North Frisian language (ISO 639-2 code)
FRR Falls Road Railroad (reporting mark), Federaţia Română de Radioamatorism (Romanian, "Romanian Amateur Radio Federation"), Fix, Rebuild, Replace,Federaţia Română de Rugby (Romanian, "Romanian Rugby (Union) Federation")
FRO Faroe Islands (ISO 3166 trigram)
FRS Fellow of the Royal Society,U.S. Federal Reserve System
FRSA Fellow of the Royal Society of Art
FRSL -Fellow of the Royal Society of Literature
fry West Frisian language (ISO 639-2 code)
FRY Federal Republic of Yugoslavia
fs Femtosecond
fS Femtosiemens
FS Fire Support (military), French Southern and Antarctic Territories (FIPS 10-4 territory code)
FSA Fire Support Area,UK Food Standards Agency,Functional Solution Analysis
FSB Federal'naya Sluzhba Bezopasnosti Rossiyskoi Federatsii (Федера́льная слу́жба безопа́сности Росси́йской Федера́ции, Russian "Federal Security Service of the Russian Federation", succeeded the FSK in 1995),Forward Support Battalion
FSC Federal Supply Classification, Forest Stewardship Council (ecological pressure group
FSCL Fire Support Co-ordination Line
FSE Fire Support Element
FSF Free Software Foundation
FSH Follicle-stimulating hormone
FSI Fuel Stratified Injection
FSK Federal'naya Sluzhba Kontrrazvedki (Федера́льная Слу́жба Контрразве́дки, Russian "Federal Counterintelligence Service", succeeded the KGB in 1991)
FSM Federated States of Micronesia (ISO 3166 trigram), Flying Spaghetti Monster (satirical religion)
FSO Fire Support Officer,Flotilla Staff Officer,Foreign Service Officer
FSS Fire Support Station
FSSP Families of Structurally Similar Proteins
FST Finance Support Team,Finlands Svenska Television (Finland's Swedish-language television),Future Soviet Tank (Cold War era)
FSTC Foreign Science Technology Center (now NGIC)
FSV Fire Support Vehicle,Fisheries Survey Vessel,Flexible Sender Validation,Fort St. Vrain,Fußball und Sportverein (German "Football and Sport Association", as in FSV Mainz),FT[edit]
fT Femtotesla
FTC Federal Trade Commission
FTE Full Time Equivalent
FTL Faster Than Light
FTP File Transfer Protocol
FTSE (a/i) Financial Times Stock Exchange ("footsie")
FTW For The Win (a commonly used phrase used online to indicate success) F@#K The World, Forever Together Where ever (gang slogan)
FTS Flight Termination System used during some rocket launches
FTS Fuck That Shit
FTS Follow-the-sun
FU Smoke (METAR Code)
FUBAR Fucked/Fouled Up Beyond All Recognition/Repair
FUCK For, Unlawful, Carnal, Knowledge (Van Halen album title)
FUD Fear, Uncertainty & Doubt (marketing strategy)
ful Fula language (ISO 639-2 code)
fV Femtovolt
fW Femtowatt
FW Forward
FWC Football World Cup
FWF Fixed Word Format
FWI French West Indies
FWIW For What It's Worth
FWS U.S. Fish and Wildlife Service
FWT Fresh Water Tank
FX Firefox-Fox Extended-Metropolitan France (ISO 3166 digram; obsolete 1997)-Special effect
FXX Metropolitan France (ISO 3166 trigram; obsolete 1997)
fy West Frisian language (ISO 639-1 code)
FY Fiscal Year-Former Yugoslav Republic of Macedonia (NATO country code)
FYA For Your Agenda
FYDP Five-Year Defense Plan (U.S.)
FYI For Your Information
FYROM Former Yugoslav Republic of Macedonia, currently North Macedonia
FZDZ Freezing Drizzle (METAR Code)
FZFG Freezing Fog (METAR Code)
FZRA Freezing Rain (METAR Code)
g Gram
G Gauss-General Audiences (movie rating)
G1 Assistant Chief-of-Staff, Personnel
G2 Assistant Chief-of-Staff, Intelligence
G3 many, including Heckler & Koch G3; see entry-Assistant Chief-of-Staff, Operations and Plans
G4 Generation Four PowerPC microprocessor-Assistant Chief-of-Staff, Logistics
G5 Generation Five PowerPC microprocessor-Assistant Chief-of-Staff, Public Affairs
G6 Assistant Chief-of-Staff, Information Technology-Group of 6 (France, Germany, United States, Japan, United Kingdom, Italy) (1975)
G7 Assistant Chief-of-Staff, Training-Group of 7 (G6 + Canada) (1976)
G8 Assistant Chief-of-Staff, Finance-Group of 8 (G7 + Russia) (1998)
G9 Assistant Chief-of-Staff, Civil-Military Co-operation (CIMIC)
G10 Group of 10 (G7 + Belgium, Netherlands, Sweden, Switzerland; numbering 11 in fact)
G15 Group of 15 (subset of G77, formed 1989: Algeria, Argentina, Brazil, Chile, Egypt, India, Indonesia, Jamaica, Kenya, Nigeria, Malaysia, Mexico, Peru, Senegal, Sri Lanka, Venezuela and Zimbabwe; currently numbers 17)
G20 Group of 20 (G8 + Argentina, Australia, Brazil, China, India, Indonesia, Mexico, Saudi Arabia, South Africa, South Korea, Turkey + current European Union presiding country) (1999)
G24 Group of 24 (subset of G77, formed 1971: Algeria, Argentina, Brazil, Colombia, Côte d'Ivoire, Democratic Republic of the Congo, Egypt, Ethiopia, Gabon, Ghana, Guatemala, India, Iran, Lebanon, Mexico, Nigeria, Pakistan, Peru, Philippines, South Africa, Syria, Sri Lanka, Trinidad and Tobago and Venezuela)
G77 Group of 77 (issued from the United Nations Conference on Commerce and Development, 1964; currently numbers 133)
Ga Gallium-Gigaannum
GA Gabon (ISO 3166 digram)-
GAAR General Anti-Avoidance Rule (tax evasion)
GAB Gabon (ISO 3166 trigram)
GABA Gamma-AminoButyric Acid
GAD Generalized Anxiety Disorder
GAF Garfield and Friends
GALCIT Guggenheim Aeronautical Laboratory, California Institute of Technology
GAO U.S. Government Accountability Office
GAW Global Atmospheric Watch
GB Gabon (FIPS 10-4 country code)-United Kingdom of Great Britain and Northern Ireland (ISO 3166 digram) [glamour boy 7-9/10]
GBBC Great (Global) Backyard Bird Count
GBE Knight/Dame Grand Cross of the Order of the British Empire
GBH Great Bash Heel (Japanese professional wrestling stable),Gregory Bonner Hale (British design and advertising agency),Grievous bodily harm
GBP United Kingdom pound sterling (ISO 4217 currency code)
GBR United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
GBU Glide-Bomb Unit-Global Business Unit
GC East Germany (NATO country code; obsolete 1990), General classification (cycling),General counsel,George Cross (British civil decoration), Gigacoulomb [Grindr cruise]
GCA Graduate in Claims Administration
GCCS (i/a) Global Command and Control System ("geeks")
GCD see entry
GCF Greatest Common Factor
GCI Ground-controlled interception
GCN Gamma-ray burst Coordination Network
GCS Global Coordinate System
GCSE General Certificate of Secondary Education (UK)
gd Scottish Gaelic language (ISO 639-1 code)
Gd Gadolinium
GD Grenada (ISO 3166 digram)
GDC Game Developers Conference-General Dental Council
GDL Game Definition Language
GDP General Dental Practitioner (UK)-Gross Domestic Product
GDR German Democratic Republic (cf. DDR)
GDR General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
GDW Game Designers Workshop
Ge Germanium
GE General Electric-Genetic Engineering (cf. GM)-Georgia (ISO 3166 digram)
GEBCO General Bathymetric Chart of the Oceans
GEC Great Engineering Challenge
GED General Educational Development (high school equivalency credential in the U.S. and Canada)
GEEP Geophysical Equipment Exploration Platform
GEL Georgian lari (ISO 4217 currency code)-Gilbert and Ellice Islands (ISO 3166 trigram; obsolete 1977)
GEMA
GEN Full General (four stars) in the U.S. Army
GEO Geostationary Earth Orbit-Georgia (ISO 3166 trigram)
GEOS Graphical Environment Operating System
GEQ Equatorial Guinea (IOC trigram, but not FIFA or ISO 3166)
GER Germany (IOC and FIFA trigram, but not ISO 3166)
Gestapo GEheime STAatsPOlizei (German "secret state police")
GeV Gigaelectron-volt
GEV Ground Effect Vehicle
GF French Guiana (ISO 3166 digram),Gigafarad
GFCF Gluten-free, casein-free diet,Gross fixed capital formation
GFCI Ground Fault Circuit Interruptor (aka GFI)
GFDL GNU Free Documentation License
GFE Girlfriend experience (used in escort services),Good Faith Estimate,Government Furnished Equipment
GFI Ground Fault Interruptor (aka GFCI)
GFL German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
GFN Global Footprint Network
GFW Global Force Wrestling-either the original incarnation or Impact Wrestling, which was briefly known under the name, Great Firewall of China (cf. Internet censorship in China)
GFY "good for you" or "go fuck yourself", depending on the context (Internet chat)
GG Georgia (FIPS 10-4 country code)
GGK Good God Karma
GGWP Good Game Well Play
GGP General Game Playing,GH[edit]
GH Ghana (ISO 3166 digram; FIPS 10-4 country code)-Gigahenry
GHA Ghana (ISO 3166 trigram)
GHB gamma-Hydroxybutyric acid
GHC Ghanan cedi (ISO 4217 currency code)
Gi Gibi
GI Galvanised Iron-
GIB Gibraltar (ISO 3166 trigram)
GIF Graphics Interchange Format
GIG Global Information Grid
GIGO Garbage In Garbage Out (computing)
GIMP GNU Image Manipulation Program
GIN Guinea (ISO 3166 trigram)-Guidelines International Network
GIP Gibraltar pound (ISO 4217 currency code)
GIS Geographic Information System-Google Image Search
GISS (a/i) General Impression of Size and Shape-Goddard Institute for Space Studies
GJ Gigajoule-Grenada (FIPS 10-4 country code)-
GJD Geocentric Julian Day
GK Gigakelvin-Guernsey (FIPS 10-4 territory code)
gl Galician language (ISO 639-1 code)
GL Gigalitre, Graphics Language, Greenland (ISO 3166 digram; FIPS 10-4 territory code), Grenade Launcher
gla Scottish Gaelic language (ISO 639-2 code)
GLAAD Gay and Lesbian Alliance Against Defamation
GLAC General Ledger Accounting Code
GLAST Gamma-ray Large Area Space Telescope
GLBA Gramm-Leach-Bliley Act
GLC Gas-liquid chromatography
gle Irish language (ISO 639-2 code)
glg Galician language (ISO 639-2 code)
GLINT Gallium-arsenide Laser Illuminator for Night TV,Gated Laser Illuminator for Narrow Television, Gated Laser Intensifier (tape),Gospel Literature International,Graphical Linux Installation Tool
GLONASS Globalnaya navigatsionnaya sputnikovaya sistema (Russian Глоба́льная Навигацио́нная Спу́тниковая Систе́ма, "Global Navigation Satellite System")
GLP Guadeloupe (ISO 3166 trigram)
GLUT (a/i) OpenGL Utility Toolkit
glv Manx language (ISO 639-2 code)
GLV Gained Life Value
Gm Gigametre
GM The Gambia (ISO 3166 digram), GameMaster (role-playing),General Motors,Genetically Modified, Germany (FIPS 10-4 country code), Guru Meditation (computing)
GMAC General Motors Acceptance Corporation, the original name of the company now known as Ally Financial,Graduate Management Admission Council,G-MAC, Great Midwest Athletic Conference
GMB The Gambia (ISO 3166 trigram), General, Municipal, Boilermakers (and Allied Trade Union)
GmbH Gesellschaft mit beschränkter Haftung (German, "Company with limited liability")
GMC U.K. General Medical Council,Gospel Music Channel
GMD Gambian dalasi (ISO 4217 currency code)
GMFSC Ground Mobile Forces Satellite Communications
GMI Generic Model Interface,Geometry Model Instance
GML Generalized Markup Language,Geography Markup Language,Game Maker Language,Graph Modelling Language,Graphical Motion Language,GUI Markup Language
GMO Genetically Modified Organism
GMPCS Global Mobile Personal Communications by Satellite
GMT Giant Magellan Telescope,Greenwich Mean Time,GN[edit]
gn Guaraní language (ISO 639-1 code)
GN Giganewton,Guinea (ISO 3166 digram)
GNAS Grand National Archery Society
GNB Guinea-Bissau (ISO 3166 trigram)
GNC "G&C Records" NetLabel,General Nutrition Centers (US sports nutrition retailer branded as GNC)
GNF Guinean franc (ISO 4217 currency code)
GNOME GNU Network Object Model Environment
GNP Gross National Product
GNQ Equatorial Guinea (ISO 3166 trigram)
GnRH Gonadotropin-Releasing Hormone
GNU GNU's Not Unix
GO Glorioso Islands (FIPS 10-4 territory code)
GOA General of the Army (United States only), Gun Owners of America
GOAT Greatest of all time (LL Cool J album title)
GOC General Officer Commanding
GOES Geostationary Operational Environmental Satellite
GOP Grand Old Party
gorp granola, oats, raisins, peanuts (another name for trail mix), probably a backronym
GOSC (a/i) General Officer Steering Committee
GOSH Great Ormond Street Hospital
GOSP Gas/Oil Separation Plant
GOTS Government off-the-shelf
GOWI Get On With It
GOYADIN Get Off Your Arse, Do It Now (anti-procrastination mantra)
GP
GPA Grade Point Average
GPC Global Path Cache
GPG GNU Privacy Guard
GPIB General-Purpose Instrumentation/Interface Bus
GPL GNU General Public License
GPMP General Purpose Macro Processor
GPO General Post Office
GPPC Genetics and Public Policy Center
GPR Ground-Penetrating Radar
GPS General Problem Solver-Global Positioning System
GPT GEC-Plessey Telecommunications-General Purpose Technology-Get Paid To website
GPU Gosudarstvennoye Politicheskoye Upravlenie (Russian Государственное Политическое Управление, "State Political Administration") (1922-1934)-Graphics Processor Unit
GQ Equatorial Guinea (ISO 3166 digram), Gentlemen's Quarterly (the original name of the magazine now known simply as GQ), Guam (FIPS 10-4 territory code),GR[edit]
GR Greece (FIPS 10-4 country code; ISO 3166 digram)-Hail (METAR Code)
GRAIL Gravity Recovery and Interior Laboratory
GRAS Generally recognized as safe (FDA list)
GRB Gamma-ray burst
GRC Greece (ISO 3166 trigram)
GRD Grenada (ISO 3166 trigram)
GRE Graduate Record Examination, Greece (IOC and FIFA trigram, but not ISO 3166)
grep [search] Globally for Regular Expression, Print [lines]
GRid Global Release Identifier, a music industry identifier from the RIAA and IFPI
GRID Gay-Related Immune Deficiency (original name of AIDS)
GriT Girl raised in Texas (Woman presenting firm southern traits/beliefs)
GRL Greenland (ISO 3166 trigram)
GRN Grenada (IOC and FIFA trigram, but not ISO 3166), Goods received note
grn Guaraní language (ISO 639-2 code)
GRP Graphite-reinforced plastic, see Carbon-fiber-reinforced polymer
GRU Glavnoje Razvedyvatel'noje Upravlenije/Главное Разведывательное Управление (Russian, "Main Intelligence Directorate" [of the former Soviet and now Russian armed forces])
Gs Gigasecond
GS General Schedule (US civil service pay scale),General Support, Gigasiemens,South Georgia and the South Sandwich Islands (ISO 3166 digram)
GSR Gun Shot Residue
GSA U.S. General Services Administration
GSD Graphical Situation Display
GSG German Sport Guns,Global Scenario Group (former environmental research organization),Grenzschutzgruppe (German, "Border Guard Group" — Germany's GSG 9 counterterrorist unit was originally a special branch of the border police)
GSGB (God send glamour boy 9-10/10)
GSK GlaxoSmithKline [good sexual karma]
GSM General Service Medal,Grams per Square Metre (paper thickness; properly g/m2),Ground Station Module,Groupe spécial mobile (French, "Special Mobile Group"; official expansion is now Global System for Mobile Communications)
GSN (a/i) Game Show Network
GSO General Services Officer (U.S. Department of State)
GSOH Good Sense Of Humour
GSP Georges St-Pierre (Canadian MMA fighter)
GSS Generic Security Services
GST Goods and Services Tax (Australia, Canada, and other countries)
GSW Gunshot wound
GT
GTA Grand Theft Auto
GTB Get to bed, namely to get a new job after a long time of searching, usually following a phone call
GTC Gran Telescopio Canarias (Spanish, Canaries Great Telescope)
GTD Getting Things Done
GTFO "Get the fuck out!"
GTG Got To Go (Internet chat)
GTK Good To Know (Internet chat)
GTGN Getty Thesaurus of Geographic Names
GTM Guatemala (ISO 3166 trigram)
GTQ Guatemalan quetzal (ISO 4217 currency code)
GTV Gross Tumor Volume quetzal (ISO 4217 currency code)
gu Gujarati language (ISO 639-1 code)
GU Guam (postal symbol; ISO 3166 digram)
GUA Guatemala (IOC and FIFA trigram, but not ISO 3166)
GUF French Guiana (ISO 3166 trigram)
GUI Graphical user interface ("goo-ey")
GUILT Gangliated Utrophin Immuno Latency Toxin
guj Gujarati language (ISO 639-2 code)
GULCR Grupo de Usuarios de Linux de Costa Rica
Gulag Glavnoye Upravleniye ispravitelno-trudovykh LAGerei i kolonii (Russian Главное Управление Исправительно—Трудовых Лагерей и колоний, "Main Directorate of Corrective Labour Camps")
GUM Glavnyi Universalnyi Magazin (Russian Главный Универсальный Магазин, "Main Department Store"; known in Soviet times as Gosudarstvennyi Universalnyi Magazin/Государственный Универсальный Магазин, "State Department Store"), Guam (ISO 3166 trigram),Guide to the expression of Uncertainty in Measurement
GUT Grand Unification Theory
gv Manx language (ISO 639-1 code)
GV Gigavolt-Guinea (FIPS 10-4 country code)
GW Games Workshop-
GWARS Ground Warfare System (simulation)
GWAS Grand Western Archery Society
GWOT Global War on Terrorism
GWS Gulf War Syndrome-Greater Western Sydney
GXA Global XML Web Services Architecture
GXE Gene-enivronment interaction
GXF General Exchange Format
GXH IATA code of Gannan Xiahe Airport
GXL Graph eXchange Language
GXM Matrox Graphics eXpansion Module
GXP Grid Exit Point-Global Xchange Programme-Indication of highest performance level on some Pontiac vehicles
GxP Good X Practice
GXY IATA code of Greeley-Weld County Airport
GY -Guyana (FIPS 10-4 country code; ISO 3166 digram)
GYD Guyana dollar (ISO 4217 currency code)
GYY Gary/Chicago International Airport (IATA Airport Code)
GZ Gaza Strip (FIPS 10-4 territory code)-Ground Zero
GZK Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
h Hecto
H Henry-Hydrogen
ha Hausa language (ISO 639-1 code)-Hectare
HA Haiti (FIPS 10-4 country code)-High Availability
HAARP High Frequency Active Auroral Research Program
HAART Highly Active Anti-Retroviral Therapy
HAI Human Awareness Institute
HAL Hardware Abstraction Layer
HALO High Altitude Low Opening (parachute jump)
HALT Highly Accelerated Life Test, Hungry Angry Lonely Tired
HAM Amateur radio operator
HAMR Heat-assisted magnetic recording
HANS Head And Neck Support (device used in many race cars)
HARM High-speed Anti-Radiation Missile
hat Haitian Creole language (ISO 639-2 code)
HAT (i/a) Highest Astronomical Tide (nautical charts)-Hungarian Automated Telescope
hau Hausa language (ISO 639-2 code)
HAW Heavy Antitank Weapon
HAWK Homing All the Way Killer (air defence system)
HAZ Heat-Affected Zone
HAZMAT Hazardous Materials
HBCD HexaBromoCycloDodecane
HBCI Home Banking Computer Interface
HBO Home Box Office
HBR Harvard Business Review
HBT Heterojunction Bipolar Transistor
HBV Hepatitis B Virus
HCCI Homogeneous Charge Compression Ignition
HCF Highest Common Factor
HCI Human-Computer Interaction/Interface
HCSC Higher Command and Staff Course
HCT Higher Colleges of Technology, tertiary education institution in the United Arab Emirates (UAE)
HD Henry Draper (star catalogue),Hull-Down (armored vehicle target, as opposed to Fully Exposed),High Definition,Huntington's Disease
HDD Hard Disk Drive,High-Density Disk
HDL High-Density Lipoprotein
HDM Human Decision-Making
HDMI High Definition Multimedia Interface
HDR Hard disk recorder,Henningson, Durham & Richardson (founders of the engineering and construction firm now known by their initials),High dynamic range, a term used in both digital imaging and 3D rendering,Hot Dry Rock (experimental geothermal technology),Human Development Report (UN publication)
HDRA Henry Doubleday Research Association
HDTV High-Definition Television
he Hebrew language (ISO 639-1 code)
He Helium
HE High Explosive
HEAT High Explosive Anti-Tank (ammunition)
heb Hebrew language (ISO 639-2 code)
HEBA Hellenic Basketball Clubs Association
HEER High-Explosive Extended Range (ammunition)
HEIC Honourable East India Company
HELOC Home equity line of credit
HEMP High-Altitude Electromagnetic Pulse
HEO High Earth Orbit, Highly Elliptical Orbit
HEOSS High Earth Orbit Space Surveillance
HEP High-Explosive Plastic (ammunition)
HEPA (a/i) High-Efficiency Particulate Air (filter)
her Herero language (ISO 639-2 code)
HESH High-Explosive, Squash-Head (ammunition)
HESV Heavy Engineering Support Vehicle
HETT Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
HEU Highly Enriched Uranium
Hewitts Hills in England, Wales and Ireland over Two Thousand feet (with topographic prominence of at least 30 m)
Hf Hafnium
HF High Frequency
HFAC Human Factors ("aytchfak")
HFE Human Fertilisation and Embryology (UK Act)
HFE The common-emitter current gain in a BJT transistor (also represented by βF).
HFEA Human Fertilisation and Embryology Authority (UK)
Hg Mercury (Latin Hydrargyrum)
HGC UK Human Genetics Commission
HGF Human Growth Factor
HGTV Home & Garden Television
HHD humanitatum doctor (Latin, "doctor of humanities")
HHB Ha Ha Bonk-The noise made when you laugh your head off. Used instead of LOL...
hi Hindi language (ISO 639-1 code)
HI Hawaii (postal symbol)
HIDACZ High-Density Airspace Control Zone ("high dak zed/zee")
HIH His (or Her) Imperial Highness
HIM His (or Her) Imperial Majesty
HIMAD High to Medium Altitude Air Defence (see also H/MAD)
HIMEZ High Altitude Missile Engagement Zone
HIMYM How I Met Your Mother
hin Hindi language (ISO 639-2 code)
HIPAA U.S. Health Insurance Portability and Accountability Act
Hipparcos HIgh Precision Parallax COllecting Satellite
Hird Hurd of interfaces representing depth (cf. HURD)
HiRISE High Resolution Imaging Science Experiment
HIT Health Information Technology
HIV Human Immunodeficiency Virus
HIWT Hobart Institute of Welding Technology
HJ hic jacet (Latin, "here lies")
HJD Heliocentric Julian Day
HK Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
HKD Hong Kong dollar (ISO 4217 currency code)
HKG Hong Kong (ISO 3166 trigram)
HKS HyperKinetic Syndrome
hL Hectolitre
HL Holding Line
HLA High Level Architecture (simulation)-Human Leukocyte Antigen
HLL High-Level Language
HLN Headline News
HLOS High Level Output Specification
HLS hoc loco situs (Latin, "laid in this place")
HLVW Heavy Logistics Vehicle, Wheeled
HM Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
HMCE Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
HMCS Her/His Majesty's Canadian Ship,Her Majesty's Courts Service (former UK agency; succeeded by Her Majesty's Courts and Tribunals Service)
HMD Heard and McDonald Islands (ISO 3166 trigram)
HMF HydroxyMethyl Furfural
HMM Hidden Markov model
HMMWV High Mobility Multipurpose Wheeled Vehicle ("hum-vee"; "hummer")
hmo Hiri Motu language (ISO 639-2 code)
HMO Health maintenance organization
HMP Her Majesty's Prison
HMRC Her/His Majesty's Revenue and Customs
HMS Helmet-mounted display,Her/His Majesty's Ship (Royal Navy)
HMSO Her Majesty's Stationery Office
HMV His Master's Voice
HN Honduras (ISO 3166 digram)
HND Honduras (ISO 3166 trigram)
HNL Honduran lempira (ISO 4217 currency code)
ho Hiri Motu language (ISO 639-1 code)
Ho Holmium
HO Honduras (FIPS 10-4 country code)
HOLLAND Hope Our Love Lasts And Never Dies
HOMES the Great Lakes; Huron, Ontario, Michigan, Erie, Superior
HONY Humans of New York, a photoblog.
HOPI Hybrid Optical and Packet Infrastructure (see Internet2, Abilene Network)
HoReCa Hotel, Restaurant and Catering
HORIZON Hélicoptère d'observation radar et d'investigation sur zone (French, Zone Investigation and Radar Observation Helicopter)
HOSTAC Helicopter Operations from Ships Other Than Aircraft Carriers
HOT Highly Optimised Tolerance
HOTAS Hands on throttle-and-stick
HOV High Occupancy Vehicle
hp horse power
HP Hewlett-Packard-Hindustan Petroleum-Himachal Pradesh (Indian state code)
HPA UK Health Protection Agency
HPCL Hindustan Petroleum Corporation Limited
HPLC High Performance Liquid Chromatography
HPMOR Harry Potter and the Methods of Rationality (work of Harry Potter fan fiction)
HPT High[er] Payoff Target
HPV Human Papilloma Virus
HQ Headquarters-Howland Island (FIPS 10-4 territory code)
HQ High Quality
HQDA Headquarters, Department of the Army
hr Croatian language (ISO 639-1 code)
HR Croatia (FIPS 10-4 country code; ISO 3166 digram-from the country's native name of Hrvatska)-Haryana (Indian state code), Harvard Revised star catalogue,Human Resources
HRBL High-level Representation of Behavior Language (original name of the Herbal language)
HRD Human Resource Development
HRED (U.S. Army Research Laboratory's) Human Research and Engineering Directorate (Aberdeen Proving Ground, Maryland)
HRF High iness Forces
HRH His (or Her) Royal Highness
HRK Croatian kuna (ISO 4217 currency code)
HRM His (or Her) Royal Majesty
HRM Human Resource Management
HRT Hormone Replacement Therapy
hrv Croatian language (ISO 639-2 code)
HRV Croatia (ISO 3166 trigram), High Resolution Visible,HS[edit]
Hs Hassium
HSA A health savings account available to taxpayers in the United States.
HSBC The Hong Kong and Shanghai Banking Corporation
HSC Higher School Certificate
HSM High School Musical
HSMAD Human Science/Modeling and Analysis Data
HSN Home Shopping Network
HSPH Harvard School of Public Health
HSS Health Service Support, High-Speed Steel
HSSI High-Speed Serial Interface
HST see entry
HSV Herpes Simplex Virus,Hue Saturation Value (colour model),HT[edit]
ht Haitian Creole language (ISO 639-1 code)
HT Haiti (ISO 3166 digram), High Temperature,hoc tempore (Latin, "at this time"),hoc titulo (Latin, "under this title")
HTA HyperText Application
HTC High Tech Computer Corporation, original name of the company now known simply as HTC,Horry Telephone Cooperative
HTFU Harden The Fuck Up
HTG Haitian gourde (ISO 4217 currency code)
HTH Hope That Helps
HTI Haiti (ISO 3166 trigram)
HTML HyperText Markup Language
HTR Heated Towel Rail
HTS High-Temperature Superconducting wire
HTTP HyperText Transfer Protocol
HU Hungary (ISO 3166 digram; FIPS 10-4 country code)
HUD (i/a) Head-Up Display-Housing and Urban Development
HUF Hungarian forint (ISO 4217 currency code)
HUHA Head up his/her ass (Marine salute; probably a backcronym)
HUMINT Human Intelligence (military parlance)
hun Hungarian language (ISO 639-2 code)
HUN Hungary (ISO 3166 trigram)
HURD Hird of Unix-Replacing Daemons (cf. Hird)
HVU High Value Unit (military)
HV Upper Volta (ISO 3166 digram; obsolete 1984)
HVAC Heating, ventilation and air conditioning Used in architecture, business and marketing; refers to a building's entire system of heating, moving, or cooling air.
HVAP High Velocity Armour Piercing (ammunition)
HVHF High velocity human factors
HVM High Velocity Missile
HVO Upper Volta (ISO 3166 trigram; obsolete 1984)
HVP
HW Hardware-High Water (nautical charts)
HWM Hardware morphing (computer graphics rendering)
HX IATA code of Hong Kong Airlines-Medical history-Hydrogen halide-Concept automobile by HUMMER
HXB The glycoprotein Tenascian C
hy Armenian language (ISO 639-1 code)
hye Armenian language (ISO 639-2 code)
HYP Halkın Yükselişi Partisi (Turkish: "People's Ascent Party"), a political party in Turkey,Harvard, Yale, Princeton (perennially at or near the top of American university rankings)
HYS Harvard, Yale, Stanford (perennially named as the top three law schools in the U.S.)
hz Herero language (ISO 639-1 code)
Hz Hertz
HZ Haze (METAR Code)
I Iodine-One (in Roman numerals)
ia Interlingua language (ISO 639-1 code)
IA Iowa (postal symbol)
IAAF International Association of Athletics Federations ("International Amateur Athletics Federation" from 1912 to 2001)
IAAL I Am A Lawyer
IAAS Infrastructure-as-a-Service
IAB International Association for Biologicals
IACREOT International Association of Clerks, Recorders, Election Officials, and Treasurers
IAD Ion Assisted Deposition
IADS Integrated Air Defence System
IAEA International Atomic Energy Agency
IAF {i} Industrial Areas Foundation
IAFG Information Assurance Focus Group
IAI International African Institute-Israel Aircraft Industries
IANA Internet Assigned Numbers Authority
IANAL I Am Not A Lawyer
IAQ Indoor air quality-Infrequently Asked Questions
IAS Image Assessment System
IASIP It's Always Sunny in Philadelphia
IATA (a/i) International Air Transport Association
IATF International Automotive Task Force
IATSE International Alliance of Theatrical Stage Employees
IAU International Association of Universities-International Astronomical Union
IAUC International Astronomical Union Circular
IAW In Accordance With
IB International Baccalaureate
IBA Important Bird Area
IBD Inflammatory Bowel Disease
IBDM Information Based Decision Making
IBDS Integrated Biological Detection System-International Business Development Specialist
IBM International Business Machines
ibo Igbo language (ISO 639-2 code)
IBRD International Bank for Reconstruction and Development (part of the World Bank)
IBS Irritable Bowel Syndrome
IC Ice Crystals (METAR Code)-Iceland (FIPS 10-4 country code)-Integrated Circuit-[inner circle]
ICANN Internet Corporation for Assigned Names and Numbers
ICAO International Civil Aviation Organization
ICBM Intercontinental Ballistic Missile
ICBN International Code of Botanical Nomenclature
ICC Integrated Command and Control-International Criminal Court-International Cricket Council-Interstate Commerce Commission-International Chamber of Commerce
ICD Implantable Cardioverter-Defibrillator-Initial Capabilities Document-International Classification of Diseases
ICE (i/a) In case of emergency
ICES (a/i) International Council for the Exploration of the Sea
ICF Intelligent Community Forum
ICHTHYS Iesous Christos, Theou Yios, Soter (Greek, "Jesus Christ, Son of God, Savior")
ICM
ICMP Internet Control Message Protocol
ICNAF International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
ICNI Integrated Communication, Navigation, and Identification
ICO Intermediate Circular Orbit
ICP Inductively coupled plasma-Insane Clown Posse
ICPE (a/i) International Conference on Pharmacoepidemiology, the annual conference of the International Society for Pharmacoepidemiology
ICRAF International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
ICRISAT (i/a) International Crops Research Institute for the Semi-Arid Tropics
ICRL Individual Component Repair List
ICRS International Celestial Reference System
ICS In-Country Support-Intelligence and Communications Systems-Interim Contractor Support
ICSI Intracytoplasmic Sperm Injection
ICT Information and communication technologies
ICTH Island Closest to Heaven/Hell Final Fantasy VIII
ICV Infantry Carrier Vehicle
ICW In Co-ordination With-Indonesia Corruption Watch-
ICYMI In Case You Missed It
ICZN International Code of Zoological Nomenclature-International Commission on Zoological Nomenclature
id Indonesian language (ISO 639-1 code)
ID Idaho (postal symbol), Identity, Indonesia (FIPS 10-4 country code; ISO 3166 digram), Infantry Division,Intelligent Design,ID10T Error-Idiot User Error (IT help desk inside joke)
IDA U.S. Institute for Defense Analyses,International Development Association (part of the World Bank
IDC International Data Corporation
IDDI I don't do initialisms (see irony)
IDE Integrated Development Environment,Integrated Drive Electronics
IDeA Improvement and Development Agency, the former name of Local Government Improvement and Development in the United Kingdom
IDEA Individuals with Disabilities Education Act (U.S.),International Data Encryption Algorithm,International Design Excellence Awards
IDF Israel Defense Forces,Intel Development Forum,International Dairy Federation
IDGAF I don't give a fuck
IDK I don't know
IDKIBTI I don't know, I'm black, that's it
IDL Interface Definition Language
IDN Indonesia (ISO 3166 trigram)
ido Ido language (ISO 639-2 code)
IDR Indonesian rupiah (ISO 4217 currency code)
IDTS I don't think so
ie Interlingue language (ISO 639-1 code)
IE
IEA International Energy Agency
IEC International Electrotechnical Commission
IED Improvised Explosive Device
IEEE Institute of Electrical and Electronics Engineers ("I triple-E")
IELTS International English Language Testing System
IER Information Exchange Requirement
IET Institution of Engineering and Technology
IET (ii) Initial Entry Training
IETF Internet Engineering Task Force
IEW Intelligence and Electronic Warfare
IFAB International Football Association Board
IFAH International Federation for Animal Health
IFAP International Federation of Agricultural Producers
IFC International Finance Corporation (part of the World Bank)-Independent Film Channel
IFF Identification, Friend or Foe-Individually Fresh Frozen-International Flavors and Fragrances
IFFN Identification, Friend, Foe, or Neutral
IFO Identified Flying Object (see also UFO)
IFOR UN Implementation Force-Institute for Operations Research-International Fellowship of Reconciliation
IFOV Instantaneous Field of View
IFPI International Federation of Phonographic Industries
IFR Instrument Flight Rules
IFRB International Frequency Registration Board
IFV Infantry Fighting Vehicle
ig Igbo language (ISO 639-1 code)
IG Inspector General
IGNOU Indira Gandhi National Open University
IGS International Ground Station
IGY Israeli Gay Youth-International Geophysical Year
IHH Idiopathic Hypogonadotropic Hypogonadism
IHO (i/a) International Hydrographic Organization
IHOP (i/a) International House of Pancakes, the original name of this American restaurant chain ("EYE-hop")
IHR Institute for Historical Review
IHSI Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
ii Sichuan Yi language (ISO 639-1 code)
II Two (in Roman numerals)
IICA Inter-American Institute for Cooperation on Agriculture
IIE Innovative Interstellar Explorer
iii Sichuan Yi language (ISO 639-2 code)
III Three (in Roman numerals)
IIMSS If I May Say So
IIRC If I Remember Correctly, If I Recall Correctly
IISS International Institute for Strategic Studies
IIT Illinois Institute of Technology-Indian Institutes of Technology-Indiana Institute of Technology
IITM Image Institute of Technology & Management-Indian Institute of Technology Madras-Indian Institute of Tropical Meteorology
IJN Imperial Japanese Navy (World War II)
IJWP Interim Joint Warfare Publication
ik Inupiaq language (ISO 639-1 code)
IKEA Ingvar Kamprad (the company's founder), Elmtaryd (the farm where he was born and raised), Agunnaryd (a village and parish near the farm)
iku Inuktitut language (ISO 639-2 code)
IL Illinois (postal symbol)-Israel (ISO 3166 digram)
ILC International Law Commission-International Linear Collider
ILDS Improved Landmine Detection System
ile Interlingue language (ISO 639-2 code)
ILO International Labour Organization
ILRI International Livestock Research Institute
ILS Israeli shekel (ISO 4217 currency code)
ILY IATA code for Islay Airport (Scotland), I Love You [pronounced ILL-LEE]
IM Isle of Man (FIPS 10-4 territory code), Instant Message (Internet speech)
IMA Intermediate Maintenance Activity,Institute of Mathematics and Applications
IMBD International Migratory Bird Day
IMDb Internet Movie Database
IME In My Experience
IMF id music file/id's music format (audio file format),Impossible Missions Force, the protagonist organization in the Mission: Impossible media franchise,International Monetary Fund (the most common use for the initialism)
IMHO In My Humble/Honest Opinion, cf. IMO
IML International Mister Leather
IMLAST International Movement for Leisure Activities in Science and Technology-see MILSET
IMNM -Immune-mediated necrotizing myopathy a rare, but serious ADR of statins [1]
IMNSHO In My Not So Humble Opinion
IMPAC International Merchant Purchase Authorization Card
IMPACT International Medical Products Anti-Counterfeiting Taskforce
IMPATT IMPact Avalanche Transit Time diode
IMPT Institute of Maxillofacial Prosthetists and Technologists
IMR Inzhenernaya Mashina Razgrazhdeniya (Russian Инженерные Машины Разграждения, "Engineer Vehicle Obstacle-Clearing") †
IMRI Industrial Membrane Research Institute,Information Management Research Institute,Institut pour le management de la recherche et de l'innovation (French, "Institute for the Management of Research and Innovation"),International Market Research Information,Intraoperative Magnetic Resonance Imaging
IMRO Internal Macedonian Revolutionary Organization,Irish Music Rights Organisation
IMRL Individual Material iness List
IMS Information Management System,International Meat Secretariat,Ion Mobility Spectrometer
IMSA Illinois Mathematics and Science Academy,International Mind Sports Association,International Motor Sports Association
IMsL International Ms. Leather
IMT Integrated Management Tool
IMU International Mathematical Union
In Indium
IN India (FIPS 10-4 country code; ISO 3166 digram)-Indiana (postal symbol)-Infantry
ina Interlingua language (ISO 639-2 code)
INA -Immigration and Nationality Act
INAS International Near-Earth Asteroid Survey
INC
INCITS InterNational Committee for Information Technology Standards
ind Indonesian language (ISO 639-2 code)
IND India (ISO 3166 trigram)
inet the Internet
INDIGO (U.S.) INtelligence DIvision Gaming Operation
INFORMS (U.S.) Institute for Operations Research and the Management Sciences
INFOSEC Information Security
INLA Irish National Liberation Army
INMARSAT International Maritime Satellite organization
INR Indian rupee (ISO 4217 currency code)
INRI (a/i) Iesus Nazarenus Rex Iudæorum (Latin, "Jesus of Nazareth, King of the Jews")
INRIA Institut national de recherche en informatique et en automatique
INS Immigration and Naturalization Service
InSAR Interferometric synthetic aperture radar
INST Information Standards and Technology
INTSUM Intelligence Summary
INTERFET International Force for East Timor
io Ido language (ISO 639-1 code)
IO British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
IOC Initial Operational Capability,Intergovernmental Oceanic Commission,International Olympic Committee,International Ornithological Congress
IOLTA Interest on Lawyer Trust Accounts (charitable funding mechanism, especially for legal aid)
IOM Iowa, Ohio, Michigan (soybean origin),Institute of Medicine,International Organisation for Migration,Isle of Man
IONA Islands of the North Atlantic (alternate name for Great Britain, Ireland, the Isle of Man, and related islands)
IOT British Indian Ocean Territory (ISO 3166 trigram)
IOU "I Owe You" (Promissory note)
IP
IPA India Pale Ale-International Phonetic Alphabet-Isopropyl alcohol
IPB Intelligence Preparation of the Battlefield
IPCC Intergovernmental Panel on Climate Change-Independent Police Complaints Commission
ipk Inupiaq language (ISO 639-2 code)
IPL Inferior Parietal Lobule
IPN Instytut Pamieci Narodowej (Polish, "Institute for National Memory")
IPO Initial Public Offering
IPR In Progress Review-Intellectual Property Rights-Intelligence Production Requirement
IPT Integrated Product/Project Team
IPTS Institute for Prospective Technological Studies
IPTV Internet Protocol TeleVision
IPW Interrogation of Prisoners of War
iq idem quod (Latin, "the same as")
IQ Intelligence Quotient-Iraq (ISO 3166 digram)
IQD Iraqi dinar (ISO 4217 currency code)
Ir Iridium
IR Infrared,Intelligence requirement (military), Iran (FIPS 10-4 country code; ISO 3166 digram),Iran Air (IATA alpha code) see entry for more
IRA Individual Retirement Account,Irish Republican Army (any of several armed groups dedicated to Irish republicanism)
IRAD Internal Research and Development
IRAN (I) Inspect and Repair As Necessary
IRAS Infrared Astronomical Satellite
IRB International Rugby Board, a former name of World Rugby
IRBM Intermediate Range Ballistic Missile
IRC International Red Cross,International Reply Coupon,Internet Relay Chat
IREA Intermountain Rural Electric Association
IRL Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League, former name of the motorsport governing body now known as INDYCAR,In real life
IRM Illinois Railway Museum,Inzhenernaya Razvedyvatelnaya Mashina (Russian Инженерная Разведывательная Машина, "Engineer Reconnaissance Vehicle") †
IRN Iran (ISO 3166 trigram)
IRINN Islamic Republic of Iran News Network
IRO International Refugee Organisation
IRQ Iraq (ISO 3166 trigram)
IRR Iranian rial (ISO 4217 currency code)
IRS U.S. Internal Revenue Service
IRSN Institut de radioprotection et de sûreté nucléaire (French, "Institute for Radiation Protection and Nuclear Safety")
IRST Infra-red Search and Track
is Icelandic language (ISO 639-1 code)
IS Iceland (ISO 3166 digram),Israel (FIPS 10-4 country code)
ISA Individual Savings Account,Industry Standard Architecture,Instruction Set Architecture,International Seabed Authority
ISAAA International Service for the Acquisition of Agri-biotech Applications
ISAF International Sailing Federation,International Security Assistance Force
ISAR Inverse SAR (Synthetic Aperture Radar)
ISB Intermediate Staging Base
ISBN International Standard Book Number (ISO 2108)
ISCCP International Satellite Cloud Climatology Project
ISCII Indian Standard Code for Information Interchange
ISDN Integrated Services Digital Network
ISEF Intel International Science and Engineering Fair
ISEN Internet Search Environment Number
ISF Internal Security Force
ISI Indian Standards Institute, former name of the Bureau of Indian Standards,Inter-Services Intelligence (Pakistan),Islamic State of Iraq, an umbrella organization for several Iraqi insurgent groups
ISIL (i/a) Islamic State of Iraq and the Levant
ISIS (i/a) Institute for Science and International Security,Islamic State of Iraq and Syria
ISK Icelandic krona (ISO 4217 currency code)
isl Icelandic language (ISO 639-2 code)
ISL Iceland (ISO 3166 trigram)
ISLN International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
ISM Industrial, scientific or medical, Interstellar medium
ISMB International Society of Matrix Biologists
ISMC Intelligent Sounding Meaningless Conversation
ISO In Search Of, International Organization for Standardization (from the Greek ίσος, isos, meaning "equal")
ISOGP Indian Society of Orthodontics for General Practitioners [2]
ISP International Standardized Profile,Internet Service Provider,Information Systems Professional
ISPE (a/i) International Society for Pharmacoepidemiology
ISR Intelligence, Surveillance and Reconnaissance, Israel (ISO 3166 trigram)
ISRO Indian Space Research Organisation
ISS International Shorebird Survey (North America),International Space Station
ISSCR International Society for Stem Cell Research
ISSN International standard serial number (ISO 3297)
IST Information System Technology,UCF Institute for Simulation and Training
ISTAR Intelligence, Surveillance, Target Acquisition, and Reconnaissance
ISTC Institute of Scientific and Technical Communications (UK)
ISTS Intel Science Talent Search
ISU Integrated Sight Unit,International Skating Union,IT[edit]
it Italian language (ISO 639-1 code)
IT InferoTemporal (neurophysiology),Information Technology, Italy (FIPS 10-4 country code; ISO 3166 digram)
ita Italian language (ISO 639-2 code)
ITA Italy (ISO 3166 trigram)
ITAG Inertial Terrain-Aided Guidance
ITALY I'll Truly Always Love You
ITAS Improved Target Acquisition Sight
ITC InferoTemporal Cortex (neurophysiology)
ITCZ (i/p) Intertropical Convergence Zone
ITEC Information Technology Exposition & Conference
ITEMS Interactive Tactical Environment Management System
ITER International Thermonuclear Experimental Reactor
ITF International Tennis Federation
ITK In The Know
ITN Independent Television News (British)
ITS Incompatible Time-sharing System,Individual Training Standards
ITT International Telephone and Telegraph (U.S.)
ITTO International Tropical Timber Organization
ITU Intent-to-Use,International Telecommunication Union (International Telegraph Union 1865-1932),IU[edit]
iu Inuktitut language (ISO 639-1 code)
IUCN International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
IUD Intrauterine device (https://www.plannedparenthood.org/learn/birth-control/iud)
IUI Intrauterine insemination (http://americanpregnancy.org/infertility/intrauterine-insemination/)
IUPAC International Union of Pure and Applied Chemistry (pronounced "eye-yoo-pac")
IUPUI Indiana University-Purdue University Indianapolis
IUSS Integrated Undersea Surveillance System-Integrated Unit Simulation System-International Union of Soil Sciences
IV Côte d'Ivoire (FIPS 10-4 country code; from Ivory Coast)-Four (in Roman numerals)-IntraVenous (as in intravenous drip or intravenous therapy)
IVD Internet Video Device, intra vas device
Iveco Industrial Vehicles Corporation
IVF In Vitro Fertilisation
IVI Interchangeable Virtual Instrument
IVIS (i/a) Inter-Vehicle Information System
IVL Inter-Visibility Line
IVM In Vitro [Oocyte] Maturation
IVO In Vicinity Of
IW Impact Wrestling
IW Information Warfare
IWARS Infantry Warrior Simulation
IWC International Whaling Commission
IWT Illegal Wildlife Trade
IWW Industrial Workers of the World
IX Nine (in Roman numerals)
IXT IntraText digital library; IntraText lexical hypertext
IY Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
IZ Iraq (FIPS 10-4 country code)
J Joule
J1 Joint [Manpower &] Personnel Directorate
J2 Joint Intelligence Directorate
J2EE Java 2 Platform, Enterprise ion
J2ME Java 2 Platform, Micro ion
J2SE Java 2 Platform, Standard ion
J3 Joint Operations Directorate
J4 Joint Logistics Directorate
J5 Joint Strategic Plans & Policy Directorate
J6 Joint Information Technology Directorate (Command, Control, Communications & Computer Systems)
J7 Joint Operational Plans & Interoperability Directorate
J8 Joint Force Structure, Resources, & Assessment Directorate
J9 Joint Public Affairs Directorate (Civilian-Military Cooperation)
ja Japanese language (ISO 639-1 code)
JA Japan (FIPS 10-4 country code)
Jabodetabek Jakarta, Bogor, Depok, Tangerang, Bekasi (urban agglomeration of Jakarta)
JAFT Just A Field Test
JAG Judge Advocate General Corps (military law)
JAL Japan Airlines
JALLC Joint Analysis and Lessons Learned Centre (NATO)
JAM Jamaica (ISO 3166 trigram)
JAMA Journal of the American Medical Association
JANET Joint Academic Network
JANUS
JATO Jet-Assisted Take-Off
jav Javanese language (ISO 639-2 code)
JB Junior Branch
JB Jail Bait
JBFSA Joint Blue Force Situational Awareness
JCATS Joint Conflict And Tactical Simulation ("djay-catts")
JCDB Joint Common Data Base
JCDS Joint Chiefs of the Defence Staff
JCIDS Joint Capabilities Integration and Development System
JCIET Joint Combat Identification Evaluation Team
JCL Job Control Language
JCMOTF Joint Civil-Military Operations Task Force
JCP Java Community Process
JCPM Java Child Process Manager-Jesus Christ Prison Ministry
JCS Joint Chiefs of Staff
JCW Juggalo Championship Wrestling
JD Jack Daniel's (whiskey),Julian day,Juris Doctor (Latin, "doctor of jurisprudence")
JDAM (a/i) Joint Direct Attack Munition ("djay-dam")
JDBC Java Data Base Connectivity
JDCC UK Joint Doctrine and Concepts Centre, now the Development, Concepts and Doctrine Centre (DCDC)
JDEM Joint Dark Energy Mission
JDK Java Development Kit
JDL Jewish Defense League
JDM Japanese domestic market, referring specifically to automobiles and parts,Java Data Mining,Joint design manufacturing,JE[edit]
JE Jersey (FIPS 10-4 territory code)
JEB James Ewell Brown (Stuart),John Ellis Bush
JEDP Jahwist, Elohist, Deuteronomist, Priestly (according to the documentary hypothesis, the sources of the Torah)
JEE Java Platform, Enterprise ion
JEFX Joint Expeditionary Force eXperiment
JEPD Jahwist, Elohist, Priestly, Deuteronomist,Jointly Exhaustive, Pairwise Disjoint
JET Joint European Torus
JEZ Joint Engagement Zone
JFACC Joint Force Air Component Commander
JFACTSU U.K. Joint Forward Air Controller Training and Standards Unit
JFC Joint Force Commander
JFCOM U.S. Joint Forces Command ("jiff-comm")
JFET (i/a) Junction Field-Effect Transistor ("jay-fett")
JFK John Fitzgerald Kennedy or the airport named after him.
JFLCC Joint Force Land Component Commander
JFMCC Joint Force Maritime Component Commander
JFO Journal of Field Ornithology
JFSOCC Joint Force Special Operations Component Commander
JFTX Joint Field Training Exercise
JH Japan Highway Public Corporation
JH Jharkhand (Indian state code)
JI
JIB Joint Information Bureau
JIC Joint Intelligence Centre
JINI Java Intelligent Network Infrastructure
JITC Joint Interoperability Test Command
JIVE Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
JJAP Japanese Journal of Applied Physics
JK Jedi Knight-Just Kidding-Spanair (IATA airline designator)-Jammu & Kashmir (Indian state code)
JL Japan Airlines (IATA airline designator)
JLA Justice League of America
JM Jamaica (FIPS 10-4 country code; ISO 3166 digram)
JMD Jamaican dollar (ISO 4217 currency code)
JMS Java Message Service
JN Jan Mayen Island (FIPS 10-4 territory code)
JNI Java Native Interface
JNLP Java Network Launch Protocol
JO Jordan (FIPS 10-4 country code; ISO 3166 digram)
JOA (a/i) Joint Operations Area
JOD Jordanian dinar (ISO 4217 currency code)
Jofa Jonssons fabriker (Swedish, "Jonsson's Factories")
JOPES Joint Operations Planning and Execution System
JOR Jordan (ISO 3166 trigram)
JOTS Joint Operations Tactical System
JSP Joint Services Publication
JP Japan (ISO 3166 digram)-Justice of the Peace
JPEG Joint Photographic Experts Group ("jay-peg")
JPL Jet Propulsion Laboratory
jpn Japanese language (ISO 639-2 code)
JPN Japan (ISO 3166 trigram)
JPOW
JPY Japanese yen (ISO 4217 currency code)
JQ Jetstar Airways (IATA airline designator)-
JRA Japanese Red Army-Joint Rear Area
JRDF Joint Rapid Deployment Forces
JRE Java Runtime Environment
JREF James Randi Educational Foundation
JROC Joint Requirements Oversight Council
JROCM JROC Memorandum
JRRF Joint Rapid Reaction Force
JRSAI Journal of the Royal Society of Antiquaries of Ireland
JSAF Joint Semi-Automated Forces ("jay-saff")
JSAP Japan Society of Applied Physics
JSCSC Joint Services Command and Staff College
JSD juris scientiae doctor (Latin, "doctor of science of law")
JSEAD Joint Suppression of Enemy Air Defence (see SEAD)
JSF Joint Strike Fighter
JSIMS Joint Simulation System
JSOA Joint Special Operations Area
JSOTF Joint Special Operations Task Force
JSP JavaServer Page
JSR Java Specification Request
JSS Joint Support Ship Project
JSTARS Joint Surveillance Target Attack Radar System ("djay-starz")
JT Johnston Atoll (ISO 3166 digram; obsolete 1986)-Junior Technician (RAF)
JTAG Joint Test Action Group ("djay-tag")
JTAGS Joint Tactical Ground Station ("djay-tagz")
JTC Joint Training Confederation
JTF Joint Task Force
JTFEX Joint Task Force Exercise
JTIDS Joint Tactical Information Distribution System ("djay-tidz")
JTLS Joint Theater Level Simulation
JTMD Joint Theatre Missile Defence
JTN Johnston Atoll (ISO 3166 trigram; obsolete 1986)
JTRS (a/i) Joint Tactical Radio System ("jitters")
JU Juan de Nova Island (FIPS 10-4 territory code)
JUGFET JUnction Gate Field-Effect Transistor
JUICE JUpiter ICy Moon Explorer
JUO Joint Urban Operations
jv Javanese language (ISO 639-1 code)
JV Joint Venture-Junior Varsity
JVM Java Virtual Machine
JW Jehovah's Witnesses
JWARS Joint Warfare System (simulation)
JWP Joint Warfare Publication
JWST James Webb Space Telescope
JY Japanese Yen
JZ Joint Zone
k Kilo-
K Kelvin-Potassium (Latin Kalium)-Tanker (aircraft designation code)
K9 Canine Police Unit
ka Georgian language (ISO 639-1 code)
kA Kiloampere
Ka Kamov Design Bureau
KA Knowledge Acquisition-Karnataka (Indian state code)
KAF (i/a) Kandahar Air Field
kal Kalaallisut language (ISO 639-2 code)
kan Kannada language (ISO 639-2 code)
KANUKOKA Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, "Greenlandic Communities Association")
KARNAC Knowledge Aided Retrieval in Activity Context
KARR Knight Automated Roving Robot (Knight Rider character)
kas Kashmiri language (ISO 639-2 code)
kat Georgian language (ISO 639-2 code)
KATUSA Korean Augmentation To United States Army
kau Kanuri language (ISO 639-2 code)
kaz Kazakh language (ISO 639-2 code)
KAZ Kazakhstan (ISO 3166 trigram)
KBE Knight Commander of the Order of the British Empire
KBO Kuiper Belt Object
KBVB Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
kC Kilocoulomb
KCK Kansas City, Kansas,Koma Civakên Kurdistan (Kurdish, "Union of Communities in Kurdistan")
KCL King's College London
KCMO Kansas City, Missouri (pronounced "K-C-Moe")
KCS Kansas City Southern Railway (AAR reporting mark)
KD Kawasaki Disease-Kraft Dinner
KE Kenya (FIPS 10-4 country code; ISO 3166 digram), Kinetic Energy,Knowledge Engineering
KEDO Korean Peninsula Energy Development Organization
KEN Kenya (ISO 3166 trigram)
KERA Kentucky Education Reform Act (of 1990)
kerma Kinetic Energy Released in MAterial / in MAtter / per unit MAss
KES Kenyan shilling (ISO 4217 currency code), Killer Elite Squad (Japanese professional wrestling stable)
KESR Kent and East Sussex Railway.
KET Kentucky Educational Television, Key English Test,KF[edit]
kF Kilofarad
KFC Kentucky Fried Chicken
KFOR UN Kosovo Force
KFUPM King Fahd University of Petroleum & Minerals
kg Kilogram-Kongo language (ISO 639-1 code)
KG Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
KGB Komitet Gosudarstvennoy Bezopasnosti (Russian "Committee for State Security") (1954-1991)
KGO Knight of the Guelphic Order of Hanover
KGS Kyrgyz som (ISO 4217 currency code)
KGZ Kyrgyzstan (ISO 3166 trigram)
kH Kilohenry
KH Cambodia (ISO 3166 digram)
khm Khmer language (ISO 639-2 code)
KHL Kontinental Hockey League
KHM Cambodia (ISO 3166 trigram)
KHR Cambodian riel (ISO 4217 currency code)
KHz Kilohertz
ki Gikuyu language (ISO 639-1 code)
Ki Kibi
KI Kiribati (ISO 3166 digram)
KIA Killed In Action
KIDS Knowledge-based Integrated Design System
kik Gikuyu language (ISO 639-2 code), common typo for LOL
kin Kinyarwanda language (ISO 639-2 code)
kir Kyrgyz language (ISO 639-2 code)
KIR Kiribati (ISO 3166 trigram)
KISS Keep It Simple, Stupid / Keep It Short and Simple-Korean Intelligence Support System
KITECH Korean Institute of Industrial Technology
KITT Knight Industries Two Thousand-Knight Industries Three Thousand
KIT Keep In Touch
kj Kuanyama language (ISO 639-1 code)
kJ Kilojoule
kk Kazakh language (ISO 639-1 code)
kK Kilokelvin
KK Kabushiki kaisha (Japanese for "Stock Company", found in the legal names of countless Japanese corporations),Košarkarski klub (Slovenian), Košarkaški Klub (Croatian and Serbian in Latin script), Кошаркашки клуб (Serbian Cyrillic), Krepšinio Klubas (Lithuanian); all mean "Basketball Club", as in KK Olimpija, KK Cibona, KK Partizan, and KK Atletas
KKK Ku Klux Klan
kl Kalaallisut language (ISO 639-1 code)
kL Kilolitre
KL Kuala Lumpur-Kerala (Indian state code)
KLENOT KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
KLM Koninklijke Luchtvaart Maatschappij (Dutch "Royal Dutch Airlines")
KLOC Kilo Lines Of Code
KLS Kleine-Levin syndrome,Košarkaška liga Srbije (Latin) or Кошаркашка лига Србије (Cyrillic) (Serbian, "Basketball League of Serbia"),Kuala Lumpur Sentral,KM[edit]
km Khmer language (ISO 639-1 code)-Kilometre
KM Comoros-Knowledge Management
KMF Comoro franc (ISO 4217 currency code)
KMFDM Kein mitleid für die mehrheit (German "No pity for the majority" music band)
KMR Kwajalein Missile Range
kn Kannada language (ISO 639-1 code)
kN Kilonewton
KN Democratic People's Republic of Korea (FIPS 10-4 country code)-Saint Kitts and Nevis (ISO 3166 digram)
KNA Saint Kitts and Nevis (ISO 3166 trigram)
KNVB Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
ko Korean language (ISO 639-1 code)
KO Knocked Out
kom Komi language (ISO 639-2 code)
kon Kongo language (ISO 639-2 code)
kor Korean language (ISO 639-2 code)
KOR Republic of Korea (ISO 3166 trigram)
KP Kim Possible
KPMG Klynveld, Peat, Marwick, Goerdeler
KPNO Kitt Peak National Observatory
KPV Krupnokaliberniy Pulemet Vladimorova (Russian КПВТ Крупнокалиберный Пулемет Владимирова, "Large-Calibre Machinegun Vladimirov")[1]
KPVT Krupnokaliberniy Pulemet Vladimorova Tankoviy (Russian КПВТ Крупнокалиберный Пулемет Владимирова Танковый, "Large-Calibre Machinegun Vladimirov Tank")[2]
KPW North Korean won (ISO 4217 currency code)
KQ Kenya Airways (IATA airline designator)-Kingman Reef (FIPS 10-4 territory code)
kr Kanuri language (ISO 639-1 code)
Kr Krypton
KR Kiribati (FIPS 10-4 country code)-Republic of Korea (ISO 3166 digram)
KRW South Korean won (ISO 4217 currency code)
ks Kashmiri language (ISO 639-1 code),Kilosecond
kS Kilosiemens
KS Kansas (postal symbol),Republic of Korea (FIPS 10-4 country code)
KSC Kennedy Space Center
KSI Killed or Seriously Injured
KSM Korean Service Medal,Khalid Sheikh Mohammed
KSU Kansas State University
kT Kilotesla
KT Christmas Island (FIPS 10-4 territory code)-Knight of the Order of the Thistle-Knights Templar
KTS Knight of the Tower and Sword (of Portugal)
ku Kurdish language (ISO 639-1 code)
KU Kuwait (FIPS 10-4 country code)
kua Kuanyama language (ISO 639-2 code)
KUL Katholieke Universiteit Leuven (Flemish, Catholic University of Leuven)
kur Kurdish language (ISO 639-2 code)
KUW Kuwait (UNDP country code, IOC and FIFA trigram, but not ISO 3166)
kv Komi language (ISO 639-1 code)
kV Kilovolt
KV Kosovo
KV Kavminvodyavia (IATA airline designator)-
KVM Keyboard, Video, Mouse switch
KVT Killer-Victim Table (military simulations)
kw Cornish language (ISO 639-1 code)
kW Kilowatt
KW Kuwait (ISO 3166 digram)
KWB Kids' WB!
KWD Kuwaiti dinar (ISO 4217 currency code)
KWT Kuwait (ISO 3166 trigram)
KX Cayman Airways (IATA airline designator)
ky Kyrgyz language (ISO 639-1 code)
KY Cayman Islands (ISO 3166 digram),Kentucky (postal symbol)
KYD Cayman Islands dollar (ISO 4217 currency code)
KZ Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
KZN KwaZulu-Natal
KZT Kazakh tenge (ISO 4217 currency code)
L Fifty (in Roman numerals)-
Latin Left-Litre-Low (transmissions)
la Latin language (ISO 639-1 code)
La Lanthanum
LA Laos (FIPS 10-4 country code; ISO 3166 digram),Louisiana (postal symbol), Los Angeles
LAAS Local Area Augmentation System,Los Angeles Astronomical Society
LAB Logistics Assault Base
LabVIEW Laboratory Virtual Instrumentation Engineering Workbench
LACMA (a/i) Los Angeles County Museum of Art
LAD Laser Aiming Device
LADW Local Air Defence Warning
LAESI Local Authority & Emergency Service Information
LAK Laotian kip (ISO 4217 currency code)
LAMP (multiple meanings)
LAN Local Area Network
LANL Los Alamos National Laboratory
lao Lao language (ISO 639-2 code)
LAO Laos (ISO 3166 trigram)
LAPD Los Angeles Police Department
LAR Light Armoured Reconnaissance,Logistics Assistance Representative
LARC Livermore Advanced Research Computer (cf. LLNL)
LARP Live-Action Role-Playing
LAS McCarran International Airport (Las Vegas, Nevada)
Laser Light Amplification by Stimulated Emission of Radiation (cf. Maser)
lat Latin language (ISO 639-2 code)
LAT (i/a) Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
LATA Local Access Transport Area
LATCH Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
lav Latvian language (ISO 639-2 code)
LAV Land Assault Vehicle,Light Armoured Vehicle,Lymphadenopathy-Associated Virus,LAW]-Light Antitank Weapon
LAX Los Angeles International Airport, The Latin American Xchange (professional wrestling),LB[edit]
lb pound (Latin librum),Luxembourgish language (ISO 639-1 code)
LB Lebanon (ISO 3166 digram)
LBH Light Battlefield Helicopter,Lyman-Birge-Hopfield bands
LBJ Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
LBN Lebanon (ISO 3166 trigram)
LBNL Lawrence Berkeley National Laboratory
LBP Lebanese pound (ISO 4217 currency code)
LBR Liberia (ISO 3166 trigram)
LBS Location-based service
lbs pounds (plural form of lb, see above)
LBT Large Binocular Telescope
LBW Leg Before Wicket
LBY Libya (ISO 3166 trigram)
LC Line of Contact-Saint Lucia (ISO 3166 digram)
LCA Saint Lucia (ISO 3166 trigram)
LCC Land Component Commander
LCCP Light Contingency Communications Package
LCD Liquid Crystal Display
LCE Leaving Certificate Examination-Load Carrying Equipment-London Commodity Exchange
LCM Least/Lowest Common Multiple
LCol Lieutenant-Colonel (Canada, UK)
LCS League of Legends Championship Series
LD Laser Designator,Limited Deployment,Line of Departure
LDA Lateral Drift Apparatus (paratroops)
LDAP (a/i) Lightweight Directory Access Protocol (pronounced "ell-dap")
LDC Lesser Developing/Developed Country
LDL Low-Density Lipoprotein
LDMOS (i/a) Laterally diffused MOS transistor ("ell-dee-moss")
LDS Latter-day Saint (also "Latter Day Saint"); also used as an abbreviation by The Church of Jesus Christ of Latter-day Saints,Liberal Democracy of Slovenia
LDV Local Defence Volunteers (British Home Guard)
LDW Lane Departure Warning (ADAS)
LE Lebanon (FIPS 10-4 country code)
LEC Local Exchange Carrier
LED Light-Emitting Diode
Legs level emotion gad speed
LEGAD Legal Advice
LEMOSS Long-Endurance MObile Submarine Simulator
LEN Large Extension Node
LEO Low Earth orbit
LEP Large Electron-Positron collider
LER Loss-Exchange Ratio
LEU Low-Enriched Uranium
LF Low Frequency
LFO Low Frequency Oscillation / Oscillator
LFTR Liquid fluoride thorium reactor
lg Luganda (ISO 639-1 code)
LG Latvia (FIPS 10-4 country code)
LGB Lesbian, Gay, Bisexual,Laser-guided bomb, self-explanatory
LGBT Lesbian, Gay, Bisexual, Transgender
LGLO Love God, Love Others
LGM Little Green Men
LGS Landsat Ground Station
LH Lithuania (FIPS 10-4 country code)-Luteinising Hormone
LHC Large Hadron Collider
LHD litterarum humaniorum doctor (Latin, "doctor of humane letters (humanities)"),Left-Hand Drive (automobile)
LHS Left Hand Side
li Limburgish language (ISO 639-1 code)
Li Lithium
LI Fifty-one (in Roman numerals)-Liberia (FIPS 10-4 country code)-Liechtenstein (ISO 3166 digram)
LIBOR London Interbank Offered Rate
LIBS Laser Induced Breakdown Spectroscopy
LIE Liechtenstein (ISO 3166 trigram)
LIFO Last In, First Out
LIGO Laser Interferometer Gravitational-Wave Observatory
LIJ Los Ingobernables de Japon (Spanish, "The Ungovernables of Japan"), Japanese professional wrestling stable
lim Limburgish language (ISO 639-2 code)
lin Lingala language (ISO 639-2 code)
LINEAR Lincoln Near-Earth Asteroid Research
LISA Laser Interferometer Space Antenna
lit Lithuanian language (ISO 639-2 code)
LITAS Low Intensity Two Colour Approach System (aviation)
LIVE Liquid Inertial Vibration Eliminator
LJ La Jolla,Larry Johnson (both the American football and basketball players of that name),LaserJet (HP printer brand),Library Journal,Linux Journal,LiveJournal,Ljubljana,Lord Justice of Appeal, Sierra National Airlines (IATA code)
LJJ Lord Justices of Appeal
LK Sri Lanka (ISO 3166 digram)
LKA Sri Lanka (ISO 3166 trigram)
LKL Lietuvos krepšinio lyga (Lithuanian, "Lithuanian Basketball League")
LKR Sri Lanka rupee (ISO 4217 currency code)
LKR4 Linkwitz-Riley 4th order (audio crossover type)
LL Land Line (telephone)-
LLAD Low Level Air Defence
LLB Legum Baccalaureus (Latin: Bachelor of Laws)
LLC Limited Liability Company
LLGC Llyfrgell Genedlaethol Cymru (National Library of Wales)-London Lesbian and Gay Centre
LLLTV Low-Light Level Television
LLNL Lawrence Livermore National Laboratory
LLP Limited Liability Partnership
LLTI Limiting Long-Term Illness-Long Lead Time Item
LLTR Low-Level Transit Route
LMAO Laughing My Ass Off (Internet shorthand)
LMFAO Laughing My F**king Ass Off (Internet shorthand, electro-hop duo)
LMB Lick My Balls
LMN (a/i) Lifetime Movie Network
LMS London Mathematical Society-London, Midland and Scottish (Railway)
LMS Like My Status (Internet shorthand)
LMV ()
ln Lingala language (ISO 639-1 code),Natural logarithm
LNB Liga Nacional de Básquet (Rioplatense Spanish, "National Basketball League"; top Argentine league),Ligue Nationale de Basketball (French, "National Basketball League"; the organization that operates France's top two leagues, and the unrelated top league of Switzerland),Low-Noise Block (Satellite dish)
LNER London and North Eastern Railway railway operator from 1923 until 1947 in the United Kingdom
LNG Liquefied Natural Gas
LNO Liaison Officer
LNR Ligue Nationale de Rugby (French, "National Rugby League")
lo Lao language (ISO 639-1 code)
LO Slovakia (FIPS 10-4 country code)
LOA Limit Of Advance
LOC (a/i) Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
LOD Legion of Doom, referring to any of the following:,A group of DC Comics supervillains,A hacker group,A group of Philadelphia Flyers ice hockey players in the 1990s,The Road Warriors, a professional wrestling tag team that used the name "Legion of Doom" when performing in the WWF/WWE,Limit of Detection-see Detection limit
LoD Lines of Development (UK)
LOFAR Low Frequency Analysis and Recording
LOGPAC Logistics Package
LOL Laughing Out Loud (Internet shorthand)
LOMEZ Low Altitude Missile Engagement Zone
LONEOS Lowell Observatory Near-Earth-Object Search
LOOGY (p/a) Lefty One-Out GuY, a sometimes pejorative nickname for the left-handed specialist in baseball
loq loquitur (Latin, " he speaks")
LORTID LOng Range Target IDentification
LOS Line Of Sight
LOSAT Line-Of-Sight Anti-Tank (missile)
LOTA Licentiate of the Orthodontic Technicians Association
LOTIS Livermore Optical Transient Imaging System
LOTS Logistics Over-The-Shore
LP Linkin Park,Linkup Point,Listening Post,Long Playing (record),Louisiana Pacific (cf. LP Field, a former name of the sports venue now known as Nissan Stadium)
LPC Linear Predictive Coding
LPD Landing Platform Dock (Navy hull classification),Low Probability of Detection
LPG Liquefied Petroleum Gas (cf. LNG)
LPI Low Probability of Intercept
LPS Landsat Processing System, LipoPolySaccharide,LQ[edit]
LQ Palmyra Atoll (FIPS 10-4 territory code)
Lr Lawrencium
LR Liberia (ISO 3166 digram)
LRAD Long Range Acoustic Device ("ell-rad")
LRC Logistics iness Center
LRD Liberian dollar (ISO 4217 currency code)
LRF Laser rangefinder-Low iness Forces
LRGW Long-Range Guided Weapon
LRICBM Limited Range ICBM
LRIP Low Rate Initial Production
LRP Logistics Release Point
LRPE Long-Range Planning Element
LRS Long Range Surveillance
LRU Line-Replaceable Unit
LS Landing Support, Lesotho (ISO 3166 digram),Liechtenstein (FIPS 10-4 country code), locus sigilli (Latin, "place of the seal")
LSAT Law School Admission Test (often pronounced as "el-SAT")
LSD Landing Ship, Dock (Navy hull classification),librae, solidii, denarii (Latin: Pounds, shillings and pence),lyserg-saüre-dietylamid (German "lysergic acid diethylamide")
LSE Least Squares Estimate/Error,London School of Economics,London Stock Exchange
LSI Large-Scale Integration
LSIF Labour Sponsored Investment Fund
LSL Lesotho loti (ISO 4217 currency code)
LSND Liquid Scintillator Neutrino Detector
LSO Lesotho (ISO 3166 trigram)
LSST Large Synoptic Survey Telescope
LST Landing Ship, Tank (World War II; also known, not entirely affectionately, as "Large Slow Target")
LSVW Light Support Vehicle, Wheeled
lt Lithuanian language (ISO 639-1 code)
Lt Lieutenant
LtC Lieutenant-Colonel (U.S.)
LT Lesotho (FIPS 10-4 country code)-Lithuania (ISO 3166 digram)
LTC Long-Term Costing
Ltd Limited
LTDP Long-Term Defence Plan
LTG Lieutenant General-Lightning (METAR Code)
LTI Linear Time-Invariant
LTL Lithuanian litas (ISO 4217 currency code)
LTM Acronym for Laughing To Myself
LTO Long Term Occasional (substitute teachers)
LTP Long-Term Potentiation
LTU Lithuania (ISO 3166 trigram)
ltz Luxembourgish language (ISO 639-2 code)
lu Tshiluba language (ISO 639-1 code)
Lu Lutetium
LU Acronym Love You
LU Loonatics Unleashed
lub Tshiluba language (ISO 639-2 code)
LUCA Last Universal Common Ancestor
lug Luganda (ISO 639-2 code)
LUG Linux User Group
LULU Locally Unwanted Land Use (urbanism)
LUT Limited User Test (ing)-Local User Terminal
LUVW Light Utility Vehicle, Wheeled
LUX Luxembourg (ISO 3166 trigram)
lv Latvian language (ISO 639-1 code)
LV Las Vegas, Latvia (ISO 3166 digram), Launch Vehicle,Leading Vehicle, Leave, Left Ventricle,Level Valve,Linking Verb,Liverpool Victoria
LVA Latvia (ISO 3166 trigram)
LVAD Left Ventricular Assist Device, Low-Velocity Airdrop
LVEF Left Ventricular Ejection Fraction
LVL Latvian lats (ISO 4217 currency code)
Lw Lawrencium (obsolete 1963)
LW Land Warrior-Low Water (nautical charts)
LWR Laser warning receiver
LWRC Land Warfare Resources Corporation
LWS Land Warrior System
LX Luxembourg (amateur radio ITU prefix)-Swiss International Air Lines (IATA code)
LX Electrics (theatrical term)
LY Libya (FIPS 10-4 country code; ISO 3166 digram)-Lithuania (amateur radio ITU prefix)
LYAO Laugh Your Ass Off
LYD Libyan dinar (ISO 4217 currency code)
LYLAS Love You Like A Sister
LZ Bulgaria (amateur radio ITU prefix)-Landing Zone
m Metre-Milli
M Mega--One thousand (in Roman numerals)
mA Milliampere
Ma Megaannum
MA Madagascar (FIPS 10-4 country code), Marijuana Anonymous, Master of Arts,Massachusetts (postal symbol),Megaampere,Morocco (ISO 3166 digram)
MAA Mathematical Association of America
MAAC Metro Atlantic Athletic Conference
MAC Macau (ISO 3166 trigram), U.S. Military Airlift Command (1966-1992),Mid-American Conference
MACA Military Aid to the Civil Authorities
MACE Multi-Agent Computing Environment
MACHO MAssive Compact Halo Object
MAD Magnetic Anomaly Detector, Moroccan dirham (ISO 4217 currency code), Mutual Assured Destruction
MADD Mothers Against Drunk Driving,MyoAdenylate Deaminase Deficiency, Multiply-Add
MAF Maintenance Action Form
MAFF Ministry of Agriculture, Forestry and Fisheries (various countries)
MAGIC Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
MAGNETAR [permanent dead link] Metaprogrammable AGent NETwork ARchitecture[permanent dead link]
MAGTF Marine Air-Ground Task Force
mah Marshallese language (ISO 639-2 code)
Mahasz Magyar Hanglemezkiadók Szövetsége (Hungarian, "Association of Hungarian Record Companies")
mal Malayalam language (ISO 639-2 code)
MALD Miniature Air-Launched Decoy
MANPADS MAN-Portable Air Defence System
MANPRINT MANpower and PeRsonnel INTegration
MAO (i/a) Molėtų astronomijos observatorija (Moletai Astronomical Observatory), MonoAmine Oxidase
MAOI Monoamine oxidase inhibitor
MAPS Monitoring Avian Productivity and Survivorship
MAQS Museum of the American Quilter's Society ("max")
mar Marathi language (ISO 639-2 code)
MAR Morocco (ISO 3166 trigram)
MarBEF Marine Biodiversity and Ecosystem Functioning
MARC MAchine able Cataloging (often also defined as MAchine able Code),Mailing list ARChive,Maryland Area Regional Commuter train service,Massachusetts Animal Rights Coalition,Mid-America Regional Council
MARCENT United States Marine Forces Central Command
MARFORCC Marine Force Component Commander
MARRS Martyn Young, Alex Ayuli, Rudy Tambala, Russell Smith, and Steve Young (British electronic music act)
MAS NATO Military Agency for Standardization
MASAS Monte Agliale Supernovae and Asteroid Survey
Maser Microwave Amplification by Stimulated Emission of Radiation
MASH Mobile Army Surgical Hospital
MASINT Measurement And Signature Intelligence
MATREX Modeling Architecture for Technology, Research & EXperimentation
MATS U.S. Military Air Transport Service (1948-1966)
MAVS (a/i) Mobile Artillery Vehicle System
MAW Malawi (IOC trigram, but not FIFA or ISO 3166)
MAX Meta-reasoning Architecture for "X"
MB Manitoba (postal symbol),Martinique (FIPS 10-4 territory code),Medal of Bravery (Canada)
MBA Main Battle Area,Main Belt Asteroid,Masters of Business Administration
MBI Moody Bible Institute
MBBL (U.S. Armor Center) Mounted Battlespace Battle Laboratory
MBCC Migratory Bird Conservation Commission (U.S.)
MBCS Multi-Byte Character Set
MBE Member of the Order of the British Empire, Multistate Bar Examination (U.S.)
MBIDST Member of the British Institute of Dental and Surgical Technologists
MBM Meat and Bone Meal
MBSE Model-based systems engineering
mbsf metres below sea floor,[1][2] a depth convention used in paleontology and oceanography
MBT Main Battle Tank
MBTA Massachusetts Bay Transportation Authority-Migratory Bird Treaty Act (U.S.)
MBTI Myers-Briggs Type Indicator
mC Millicoulomb
MC Macau (FIPS 10-4 territory code), Master of Ceremonies, Megacoulomb, Military Cross (bravery award), Monaco (ISO 3166 digram), Mortar Carrier, Eleven Hundred (in Roman numerals)
MCA Master of Computer Applications,Micro Channel Architecture,MultiChannel Analyzer,Music Corporation of America, the original name of the now-defunct MCA Inc.
MCC Marylebone Cricket Club,Mission Control Center,Motor Control Center,Movement Control Centre
MCD Minimal Cerebral Dysfunction,Minor civil division (U.S. Census term)
MCDL Model Composition Definition Language
MCFT Modified Compression Field Theory
MCG Melbourne Cricket Ground
MCI Microwave Communications, Inc.
MCIS Mellon Collie and the Infinite Sadness
MCM Mine Counter-Measures
MCMV Mine Counter-Measure Vessel
MCNC Microelectronics Center of North Carolina, Mixing Condensation Nucleus Counter
MCO Major Combat Operation, Monaco (ISO 3166 trigram), Movement Control Officer
MCP Maintenance Collection Point,Male Chauvinist Pig
MCR My Chemical Romance
MCSF Marine Corps Security Forces
MCT Movement Control Team
MCTIS Mounted Co-operative Target Identification System
MCU Marine Corps University,Marvel Cinematic Universe,Medium close-up (camera direction in British TV scripts), Microcontroller unit, Milk clotting units,Ming Chuan University,Minimum coded unit (digital imaging),Multipoint control unit,Municipal Credit Union (New York),MD[edit]
Md Mendelevium
MD Fifteen Hundred (in Roman numerals),Maryland (postal symbol), Medicinae Doctor (Doctor of Medicine/Medical Doctor),Mentioned in Dispatches (military), Moldova (FIPS 10-4 country code; ISO 3166 digram)
MDA Main Defensive Action/Area, Moldova (ISO 3166 trigram)-Muscular Dystrophy Association
MDF Main distribution frame,Medium-density fiberboard
MDG Madagascar (ISO 3166 trigram), UN Millennium Development Goal
MDL Moldovan leu (ISO 4217 currency code)
MDM Michigan Dartmouth MIT telescope consortium,Master data management
MDMA MethyleneDioxy-MethylAmphetamine (also known as "Ecstasy")
MDNA Madonna's 12th studio album title (2012)
MDO Membership Driven Organisation
MDP Markov Decision Process
MDT Mountain Daylight Time (UTC−6 hours)
MDS
MDV Maldives (ISO 3166 trigram)
MDW Chicago Midway International Airport in Chicago (IATA airport code), Military District of Washington, Minnesota, Dakota and Western Railway (AAR reporting mark),ME[edit]
Me Messerschmitt
ME Maine (postal symbol), Mechanical engineer[ing],Medical examiner,Middle East, Middle East Airlines (IATA code), Memory Effect-Myalgic Encephalomyelitis
MEA Maine Educational Assessment,Middle East Airlines,Millennium Ecosystem Assessment,Minimum en route altitude,Mono-ethanol Amine,Multilateral Environmental Agreement
MEAC Mid-Eastern Athletic Conference (ME-ac)
MEC Maine Central Railroad,Manta, Ecuador (IATA location identifier), Model European Council,Mountain East Conference,Mountain Equipment Co-op
MECC Minnesota Educational Computing Consortium (later Corporation, dissolved 1999)
MECCA Milwaukee Exposition Convention Center and Arena, a former name for the sports venue now known as UW-Milwaukee Panther Arena
MECO Main engine cutoff (NASA code for point in Space Shuttle assent when three main engines are shut down prior to External Tank (ET) separation)
MEDEVAC Medical evacuation
MEDLI Mars Science Laboratory Entry, Descent, and Landing Instrumentation, Medical & Scientific Libraries of Long Island, Model for Effluent Disposal using Land Irrigation
MEDS Mission Essential Data Set
MEF U.S. Marine Expeditionary Force,Minimum essential facility,Mission essential force
MEG MagnetoEncephaloGraphy
MEI Matsushita Electric Industrial Co., Ltd.
MEK Magyar Elektronikus Konyvtar,Message encryption key, methyl ethyl ketone, Mujahideen al-Khalq
MEL Maya Embedded Language,Michigan Electronic Library
MELT Metallic Line/Loop Test (ing)
MEM Message Exchange Mechanism, Microelectromechanical
MEMS Microelectromechanical System
MEO Medium earth orbit,Most efficient organization
MEP Mechanical Electrical Plumbing,Member of the European Parliament,Missions étrangères de Paris (French for "Paris Foreign Missions"),Model European Parliament
MER Mars Exploration Rover
MERL Mitsubishi Electric Research Laboratories
MES Marconi Electronic Systems,Medium Edison screw
MESSENGER MErcury Surface, Space ENvironment, GEochemistry and Ranging
MET Meteorological, Middle European Time
METAR [Meteorological] Aviation Routine weather report
METL (i/a) Mission Essential Task List ("mettle")
METOC Meteorological and Oceanographic
MEU U.S. Marine Expeditionary Unit,Maximum Expected Utility
MeV Megaelectronvolt
MEV Medical Evacuation Vehicle,Musica Elettronica Viva
MEX Mexico (ISO 3166 trigram)
MEZ Missile Engagement Zone
MES Manufacturing Execution Systems
mF Millifarad
MF Mayotte (FIPS 10-4 territory code),Megafarad
MFSB Mother, Father, Sister, Brother (1970s Philadelphia studio musicians collective)
MFT Managed file transfer,Master File Table,Mean field theory,Media Foundation Transform,Micro Four Thirds (camera design standard),MG[edit]
mg Malagasy language (ISO 639-1 code)-Milligram
Mg Magnesium-Megagram
MG Machine Gun-Madagascar (ISO 3166 digram)-Major General-Mongolia (FIPS 10-4 country code)-Morris Garage
MGA Malagasy ariary (ISO 4217 currency code)
MGB Medium Girder Bridge, Motor Gun Boat
MGM Metro Goldwyn Mayer-Montgomery, Alabama (Airport Code)
MGPAM My Gym Partner's a Monkey
MGS Mobile Gun System
mh Marshallese language (ISO 639-1 code)
mH Millihenry
MH Marshall Islands (postal symbol; ISO 3166 digram)-Megahenry-Montserrat (FIPS 10-4 territory code)
MHC Major Histocompatibility Complex
MHHW Mean Higher High Water (nautical charts)
MHL Marshall Islands (ISO 3166 trigram)
MHLW Mean Higher Low Water (nautical charts)
MHRA (UK) Medicines and Healthcare products Regulatory Agency
MHW Mean High Water (nautical charts)
MHWN Mean High Water Neaps (nautical charts)
MHWS Mean High Water Springs (nautical charts)
MHz Megahertz
mi Māori language (ISO 639-1 code)
Mi Mebi
MI Malawi (FIPS 10-4 country code),Michigan (postal symbol),Midway Islands (ISO 3166 digram; obsolete 1986), Military Intelligence
MIA Missing In Action
MIAA Maryland Interscholastic Athletic Association,Massachusetts Interscholastic Athletic Association,Michigan Intercollegiate Athletic Association,Mid-America Intercollegiate Athletics Association
MIB Men In Black,Mint In Box (Internet auction/trading listings)
MIC Military Industrial Complex
MICLIC Mine Clearing Line Charge
MICOM Missile Command
MICV Mechanised Infantry Combat Vehicle
MID Midway Islands (ISO 3166 trigram; obsolete 1986)
MIDI Musical Instrument Digital Interface
MIDAS Man-machine Integration Design and Analysis System
MIDS Multi-Function Information Distribution System
MIFC Military Industrial Financial Complex
MIFG Shallow Fog (METAR Code)
MIFPC Military Industrial Financial Pharmaceutical Complex
MIKE Monitoring of Illegal Killing of Elephants
MIL Man-In-the-Loop
MILAN Missile d´infanterie léger antichar (French, "Anti-Tank Light Infantry Missile")
MILC Mirrorless interchangeable-lens camera
MILES Multiple Integrated Laser Engagement System (live combat simulation)
MILF Moro Islamic Liberation Front, Mother I'd Like to Fuck
MILSATCOM Military Satellite Communications
MILSET Mouvement International pour le Loisir Scientifique Et Technique (French, "International Movement for Leisure Activities in Science and Technology")
MILSTRIP Military Standard Requisitioning and Issue Procedure DLMSO MILSTRIP Manual
MIMAROPA Mindoro, Marinduque, Romblon, Palawan (a region in the Philippines)
MIMOSA MIcroMeasurements Of Satellite Acceleration
MIMPT Member of the Institute of Maxillofacial Prosthetists and Technologists
MIP Multilateral Interoperability Programme,Multiple Identity Poster
MIPC Military Industrial Pharmaceutical Complex
MIRA MILAN Infra-Red Acquisition (thermal sight)
MIRV Multiple Independent Reentry Vehicle
MIS Management Information Systems,Museum Information System
MISREP Mission Report
MISSI Multilevel Information System Security Initiative
MIT Massachusetts Institute of Technology,methylisothiazoline,Milli Istihbarad Teskilati (Intelligence service of Turkey)
MITL Man-In-The-Loop
MITS see entry
mJ Millijoule
MJ Megajoule, Michael Jordan
MJD Modified Julian Day
MJP Military Judgement Panel
mk Macedonian language (ISO 639-1 code)
mK Millikelvin
MK Air Mauritius (IATA code),Macedonia (ISO 3166 digram; FIPS 10-4 country code), Mandalskameratene (Norwegian football club), Megakelvin, Milton Keynes,Missionary Kids,Mortal Kombat (1992 video game),Mortal Kombat (2011 video game)
mkd Macedonian language (ISO 639-2 code)
MKD Macedonian denar (ISO 4217 currency code),Republic of Macedonia (ISO 3166 trigram)
MKG Michael Kidd-Gilchrist (American basketball player)
MKO Mojahedin-e-Khalq Organization (Persian, "People's Mujahedin of Iran")
MKS Metre-Kilogram-Second (system of units), MKS Inc. software company
MKSA Metre-Kilogram-Second-Ampere (system of units)
MKT Missouri-Kansas-Texas Railroad (1865-1989),Mortal Kombat Trilogy,ML[edit]
ml Malayalam language (ISO 639-1 code)
mL Millilitre
ML Mali (FIPS 10-4 country code; ISO 3166 digram), Maximum Likelihood, Megalitre
MLA Martial Law Administration of Bangladesh,Master of Landscape Architecture,Medical Library Association,Member of Legislative Assembly,Modern Language Association,Mutual legal assistance treaty,Myelosis Leucemica Acuta
MLB Major League Baseball
MLC Member of the Legislative Council (in India)
MLE Maximum likelihood estimation
mlg Malagasy language (ISO 639-2 code)
MLHW Mean Lower High Water (nautical charts)
MLI Mali (ISO 3166 trigram)
MLK Martin Luther King, Jr.
MLL Major League Lacrosse
MLLW Mean Lower Low Water (nautical charts)
MLP My Little Pony
MLRS Multiple-Launch Rocket System
MLS Major League Soccer,Multiple Listing Service,Multilevel security
MLSE Maple Leaf Sports & Entertainment (owner of several Toronto-based sports teams),Maximum likelihood sequence estimation
MLSR Missing, Lost or Stolen Report
mlt Maltese language (ISO 639-2 code)
MLT Malta (ISO 3166 trigram)
MLVW Medium Logistics Vehicle, Wheeled
MLW Mean Low Water (nautical charts)
MLWN Mean Low Water Neaps (nautical charts)
MLWS Mean Low Water Springs (nautical charts)
mm Millimetre
Mm Megametre
MM Military Medal-Myanmar (ISO 3166 digram)-Two Thousand (in Roman numerals)
MMA Mixed martial arts-Moving Mechanical Assembly
MMC Machinist's Mate, Chief (USN rating)-Materiel Management Centre
MMCM Machinist's Mate, Master Chief (USN rating)-Magnetic Mine Counter Measure
MMCS Machinist's Mate, Senior Chief (USN rating)
MMEV Multi-Mission Effects Vehicle
MMI Man-Machine Interface
MMI McLean Meditation Institute
MMIC Mindfulness & Meditation Instructor, Certified
MMIC McLean Meditation Institute Certified
MMI Magical MonkeyZ Inc.
MMIO Memory-mapped I/O
MMK Burmese kyat (ISO 4217 currency code)
MMO Massively Multiplayer Online (computer game)
MMOR Master of Management in Operations Research
MMORPG Massively multiplayer online role-playing game
MMPR Mighty Morphin Power Rangers
MMR Measles, Mumps and Rubella vaccine-Myanmar (ISO 3166 trigram)
MMS Multimission Modular Spacecraft
MMU Manchester Metropolitan University-Manned Manoeuvring Unit
MMW Millimetre Wave (radar, from "mm Wave")
mn Mongolian language (ISO 639-1 code)
mN Millinewton
Mn Manganese
MN Meganewton-Minnesota (postal symbol)-Monaco (FIPS 10-4 country code)-Mongolia (ISO 3166 digram)
MNB Multinational Brigade
MND Motor Neurone Disease-Multinational Division
MNE Montenegro (ISO 3166 trigram)
MNG Multiple-image Network Graphics-Mongolia (ISO 3166 trigram)
MNMF Multi-National Maritime Force
MNP Northern Mariana Islands (ISO 3166 trigram)
MNS Mission Needs Statement
MNT Molecular nanotechnology-Mongolian tugrik (ISO 4217 currency code)
mo Moldovan language (ISO 639-1 code)
Mo Molybdenum
MO Macau (ISO 3166 digram)-Medical Officer-Missouri (postal symbol)-modus operandi (Latin, "mode of operation")-Morocco (FIPS 10-4 country code) [mutual oral]
MOA Museum of Art (Brigham Young University)
MOAB Massive Ordnance Air Blast (official)-Mother Of All Bombs (slang)
MOB Man Over Board-Marching Owl Band-Movable Object Block
MOC Macedonian Orthodox Church-Measure Of Capability-Mission Operations Centre-My Own Creation (Lego)
MOCAS Mechanization Of Contract Administration Services
MoD Ministry of Defence (United Kingdom) and various other countries
MOD Magneto-optical disc-Masters of Deception-Minimum Object Distance-Multiple Organ Dysfunction
MoDAF Ministry of Defence Architecture Framework ("moh-daff")
modem Modulator-Demodulator
ModSAF Modular Semi-Automated Forces (military simulation)
Moe Marvel of entertainment
MOE Measure Of Effectiveness
MOF (a/i) Ministry of Finance (Japan)
MOFA (a/i) Ministry of Foreign Affairs (Japan)
MOH (a/i) Medal of Honor-Music On Hold
MOID Minimum Orbital Intersection Distance
MOJWA Movement for Oneness and Jihad in West Africa
mol Moldovan language (ISO 639-2 code)-mole (unit)
MOLO Mobile Other Licensed Operator (UK)
MoM Multiple of the median
MOM Message-oriented middleware
MOM Master's Degree in Oriental medicine
MoMA Museum of Modern Art (NYC)
mon Mongolian language (ISO 639-2 code)
MOND Modified Newtonian Dynamics
MOO Measure Of Outcome
MOOTW Military Operations Other Than War ("moot-double-you")
MOP Macau pataca (ISO 4217 currency code)-Measure Of Performance
MOPE Ministry of Population and Environment (Nepal)-Most Oppressed People Ever (politics)
MOPP (i/a) Mission-Oriented Protective Posture
MORP Meteorite Observation and Recovery Project
MORS Military Operations Research Society
MOS Military Occupational Specialty-Mit Out Sound / Motor Only Sync-Mobile Object System-Model Output Statistics-Multiplayer Online Services-Mean Opinion Score
MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor
MOSS MObile Submarine Simulator-Moving Object Support System
MOT Ministry of Transport (UK)
MOTA Member of the Orthodontic Technicians Association
MOTESS Moving Object and Transient Event Search System
MOTO Mail Order / Telephone Order-Master of the obvious
MOU Memorandum Of Understanding
MOUT Military Operations in Urban[ized] Terrain
MOVES Modeling, Virtual Environments, and Simulation Institute
MOW Maintenance of way (also MW)
MOZ Mozambique (ISO 3166 trigram)
MP Magic points-Mauritius (FIPS 10-4 country code)-Member of Parliament-Military Police-Missouri Pacific-Northern Mariana Islands (postal symbol; ISO 3166 digram)
mPa Millipascal
MPa Megapascal
MPA Maritime Patrol Aircraft-Master of Public Administration
MPAA Motion Picture Association of America
MPC Minor Planet Center-Minor Planet Circular
MPC Military Payment Certificate
MPEC Minor Planet Electronic Circular
MPEG Motion Pictures (Coding) Experts Group
MPEV Multi-Purpose Engineering Vehicle
MPF Maritime Prepositioning Force
MPFC Medial PreFrontal Cortex
MPG Miles Per Gallon
MPMC Medial PreMotor Cortex
MPSI Member of the Pharmaceutical Society of Ireland
MPSoC MultiProcessor System-on-Chip
MPSRON Maritime Propositioning Ship Squadron
MQ Martinique (ISO 3166 digram)-Midway Islands (FIPS 10-4 territory code)
mr Marathi language (ISO 639-1 code)
MR Mauritania (FIPS 10-4 country code; ISO 3166 digram)
MRAV Multi-Role Armoured Vehicle
MRBM Medium Range Ballistic Missile
MRC Maintenance Requirements Card
MRD Motorized Rifle Division
MRE Meal y to Eat (U.S. military rations)
MRGO Mississippi River-Gulf Outlet Canal (also referred to as MR-GO or "Mr. Go")
MRGW Medium-Range Guided Weapon
mri Māori language (ISO 639-2 code)
MRI Magnetic Resonance Imaging
MRL Multiple Rocket Launcher
MRO Maintenance, Repair and Operating,Mars Reconnaissance Orbiter, Mauritanian ouguiya (ISO 4217 currency code)
MRPharmS Member of the Royal Pharmaceutical Society (Great Britain)
MRR Maximum Rock and Roll,Minimum-Risk Route,My Restaurant Rules
MRS Magnetic Resonance Spectroscopy
MRSA Methicillin-resistant Staphylococcus aureus
MRT Mass Rapid Transit — used as either an official or unofficial name for metro systems in Singapore, Kaohsiung, Bangkok, Taipei, Chennai, and Delhi, Mauritania (ISO 3166 trigram)
MRTFB U.S. Major Range and Test Facility Base
ms Malay language (ISO 639-1 code),Millisecond
mS Millisiemens
Ms Megasecond
MS mano sinistra (Latin, "left hand"), manuscript, Master of Science, Megasiemens, Microsoft (sometimes M$), Mississippi (postal symbol),Montserrat (ISO 3166 digram), Multiple Sclerosis,M&S, Modelling & Simulation,Marks & Spencer
MSA Malay language (ISO 639-2 code)
MSB Main Support Battalion,Most Significant Bit (or Byte)
MSD Minimum Safe Distance
MSDB Multi Source Data Base
MSDE Maryland State Department of Education, Microsoft Data[base] Engine,Microsoft SQL Server 2000 Desktop Engine, Military Scenario Development Environment,Mission Simulation Dynamic Engine
MSDL Military Scenario Definition Language
MSE Multiple Subscriber Element
MSEC Message Security Encryption Code ("emm-sec")
MSG MonoSodium Glutamate,Madison Square Garden (either the 1879, 1890, 1925, or current versions of the venue)
MSH Medium Support Helicopter,Mount Saint Helens
MSI Micro-Star International, Multispectral imagery
MSIE Microsoft Internet Explorer,Master of Science in Industrial Engineering
MSL Mars Science Laboratory,Mean Sea Level, Missile
MSLP Mean Sea Level Pressure
MSM Mainstream media, Men who have sex with men,Mount St Mary's School
MSN Microsoft Network,Master of Science in Nursing
MSNBC Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
MSO Multiple System Operator
MSP Member of the Scottish Parliament
MSPA Migrant and Seasonal worker Protection Act, MS Paint Adventures
MSPB Merit Systems Protection Board
MSR Main Supply Route,Module Service Record, Montserrat (ISO 3166 trigram), Motor Schlepp Regulung,Mountain Safety Research (outdoor supplies manufacturer)
MSSA Member of the Order of the Star of South Africa, Methicillin-susceptible Staphylococcus aureus, Military Selective Service Act, Military-style semi-automatic, Mind Sports South Africa, Montreal Student Space Associations,MSSA Chemical Company, formerly known as Métaux Spéciaux.
MST Madison Symmetric Torus,Mountain Standard Time (UTC−7 hours),MST3K or MST3k-Mystery Science Theater 3000
MSU Michigan State University,Montana State University,Mountain State University,Lomonosov Moscow State University (Russia, a.k.a. MGU),MT[edit]
mt Maltese language (ISO 639-1 code)
mT Millitesla
Mt Meitnerium
MT Malta (FIPS 10-4 country code; ISO 3166 digram),Megatesla,Montana (postal symbol), Motor Transport (military)
MTA Metropolitan Transportation Authority (Boston) (now Massachusetts Bay Transportation Authority),Metropolitan Transportation Authority
MTBF Mean time between failures
MtF Male-to-female transsexual
MTF Magnetized target fusion,Medical Treatment Facility,Message Text Format,Modulation transfer function (optics)
MTG Magic: The Gathering
MTL Maltese lira (ISO 4217 currency code), Mean Tide Level (nautical charts)* MTM-Methods-Time Measurement
MTOE Modified Table of Organization and Equipment ("emm-toe")
MTP Maritime Tactical Publication,Materiel Transfer Plan,Mission Training Plan
MTQ Martinique (ISO 3166 trigram)
MTR Main and Tail Rotor (helicopter type),Mass Transit Railway (Hong Kong metro system),Military-Technological Revolution
MTS Maintenance Training System,Manitoba Telephone System and Manitoba Telecom Services, former names of Bell MTS,Michigan Terminal/Timesharing System,Movement Tracking System,Multichannel television sound,Multi-Technical Services
MTT Methylthiazol tetrazolium (assay)
MTU Tankovei Mostoukladchik (Russian Танковый Мостоукладчик, "Tank Bridge-Layer") †
MTV MainosTeleVisio (Finnish commercial TV company),Music TeleVision
MTVL Mobile Tracked Vehicle, Light
MTWS MAGTF Tactical Warfare System
MU Mauritius (ISO 3166 digram)-Oman (FIPS 10-4 country code; from Muscat)
MUA Meritorious Unit Award-Military Utility Assessment
MUR Mauritius rupee (ISO 4217 currency code)
MUS Mauritius (ISO 3166 trigram)
mV Millivolt
MV Maldives (FIPS 10-4 country code; ISO 3166 digram)-Megavolt-Motor Vehicle-Motor Vessel
MVC Missouri Valley Conference
MVFC Missouri Valley Football Conference
MVNO Mobile virtual network operator
MVP Most Valuable Player
MVR Maldivian rufiyaa (ISO 4217 currency code)
mW Milliwatt
MW Maintenance of way (also MOW), Malawi (ISO 3166 digram), Medium Wave (radio), Megawatt, Mountain West (Conference) (formal initialism since July 2011)
MWC Maritime Warfare Centre (various nations),Mountain West Conference (still used informally, although the league has adopted "MW")
MWESH Machismo Wizards Extended SHelter (operating system)
MWI Malawi (ISO 3166 trigram)
MWK Malawian kwacha (ISO 4217 currency code)
MWOA Mount Wilson Observatory Association
MWR Morale, Welfare, and Recreation
MWTB Mounted Warfare Test Bed
MX Mail Exchange-Mexico (FIPS 10-4 country code; ISO 3166 digram)-Missile eXperimental
MXN Mexican peso (ISO 4217 currency code)
my Burmese language (ISO 639-1 code)
MY Malaysia (FIPS 10-4 country code; ISO 3166 digram)
mya Burmese language (ISO 639-2 code)-million years ago
MYOB Mind Your Own Business
MYR Malaysian ringgit (ISO 4217 currency code)
MYS Malaysia (ISO 3166 trigram)
MYT Mayotte (ISO 3166 trigram)
MZ Mach-Zehnder (interferometer)-Magnetic Azimuth-Move, Zig (Zero Wing)-Mozambique (FIPS 10-4 country code; ISO 3166 digram)
MZN Mozambique metical (ISO 4217 currency code)
n Nano
N Newton-Nitrogen-North
N3F National Fantasy Fan Federation
1911
na Nauruan language (ISO 639-1 code)
nA Nanoampere
Na Sodium (Latin Natrium)
NA Namibia (ISO 3166 digram), Narcotics Anonymous,National Archives,Negative Acknowledge,N/A, Neurotics Anonymous,not available/applicable
NAA N-Acetylaspartate
NAAD North American Air Defense
NAAFI Navy, Army and Air Force Institute (UK), No Ambition And Fuckall Interest (RSA army slang)
NAAK Mark I NAAK, Nerve Agent Antidote Kit
NAACP National Association for the Advancement of Colored People ("N double-A CP")
NAAQS National Ambient Air Quality Standards
NAAWS NATO Anti-Air Warfare System
NABCI North American Bird Conservation Initiative ("nab-see")
NAC (i/a) National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,NOAD ADVENDO Combinatie, the full name of the Dutch football club NAC Breda,North Atlantic Council,Northern Area Command
NACA (U.S.) National Advisory Committee for Aeronautics (1915-1958, became NASA)
NACC North Atlantic Cooperation Council
NACISA NATO Communications and Information Systems Agency
NACMA NATO Air Command and Control System Management Agency
NACRA North America Caribbean Rugby Association (more specifically rugby union), a former name of Rugby Americas North
NAD Namibian dollar (ISO 4217 currency code)
NAEC U.S. Naval Air Engineering Center
NAF NATO Architecture Framework, Naval Air Facility
NAFLD NonAlcoholic Fatty Liver Disease
NAFO Northwest Atlantic Fisheries Organization
NAFERA Native American Free Exercise of Religion Act
NAFTA North American Free Trade Agreement
NAGPRA Native American Graves Protection and Repatriation Act
NAI Named Area of Interest,Network Access Identifier
NAICS North American Industry Classification System
NAIL Neurotics Anonymous
NAILS National Airspace Integrated Logistics System
NAIRU Non Accelerating Inflation Rate of Unemployment
NAK Negative Acknowledge
NAM Namibia (ISO 3166 trigram)
NAMBLA North American Man-Boy Love Association
NAMRL Naval Aerospace Medical Research Laboratory
NaN Not A Number (computing)
NANP North American Numbering Plan (telephone)
NAO UK National Audit Office
NAPDD Non-Acquisition Program Definition Document ("nap-dee-dee")
NAPS Navy Acquisition Procedures Supplement
NARA (U.S.) National Archives and Records Administration
NARAL National Abortion Rights Action League
NARDAC Naval Regional Data Automation Center
NARDIC U.S. Navy Acquisition Research and Development Information Center
NARP Non-Athletic Regular Person
NARPV National Association for Remotely Piloted Vehicles
NAS National Academy of Sciences,National Air Space,National Audubon Society,Naval Air Station,New Attack Submarine
NASA National Aeronautics and Space Administration
NASCAR National Association for Stock Car Auto Racing
NASDAQ National Association of Securities Dealers Automated Quotations
NASED National Association of State Election Directors [1][2]
NASH Non-Alcoholic Steatohepatitis
NASP National Aerospace Plane
NASS National Association of Secretaries of State [3]
NatGeo National Geographic
NATO National Association of Theatre Owners,North Atlantic Treaty Organization
nau Nauruan language (ISO 639-2 code)
NaUKMA National University of Kyiv-Mohyla Academy
nav Navajo language (ISO 639-2 code)
NAV Navigation[al]
NAVCAMS Naval Communications Area Master Station
NAVCC National Audio-Visual Conservation Center
NAVCENT Naval Forces U.S. Central Command
NAVDAC Naval Data Automation Command
NAVEUR Naval Forces U.S. European Command
NAVFE U.S. Naval Forces, Far East
NAVFOR Naval Force
NAVMACS Naval Modular Automatic Communication Subsystem
NAVNET Navy Network
NAVS Non-Cooperative Airborne Vector Scoring
NAVSAT Navigation Satellite
NAVSPACECOM U.S. Navy Space Command
NAVSPASUR U.S. Naval Space Surveillance System
NAVSTAR Navigation Satellite Timing And Ranging
NAVTACNET Navy Tactical Network
NAWC U.S. Naval Air Warfare Center
NAWIRA North America and West Indies Rugby Association, the original name of the organization now known as Rugby Americas North
NAWMP North American Waterfowl Management Plan ("gnaw-wump")
nb Norwegian Bokmål language (ISO 639-1 code)
Nb Niobium
NB New Brunswick (postal symbol)-nota bene (Latin, "mark well")
NBA National Basketball Association
NBACC U.S. National Biodefense Analysis and Countermeasures Center ("enn-back")
NBC National Broadcasting Corporation-Nuclear, Biological, and Chemical
NBCRS NBC (Nuclear, Biological, and Chemical) Reconnaissance System
NBIC Nanotechnology, Biotechnology, Information Technology, Cognitive Science
nbl Southern Ndebele language (ISO 639-2 code)
NBL National Basketball League (Australia)
NBT Nitroblue tetrazolium (assay)
nC Nanocoulomb
NC Network Computer, New Caledonia (ISO 3166 digram), Node Center,Nonconsensual,Normally Closed, North Carolina (postal symbol)
NCA National Command Authority
NCAA National Collegiate Athletic Association ("NC double A")
NCAR U.S. National Center for Atmospheric Research
NCB National Codification Bureau
NCCAM U.S. National Center for Complementary and Alternative Medicine
NCCUSL National Conference of Commissioners on Uniform State Laws (U.S.)
NCDDR U.S. National Center for the Dissemination of Disability Research[1]
NCES U.S. National Center for Education Statistics,Net-Centric Enterprise Services
NCI U.S. National Cancer Institute
NCIS National Criminal Intelligence Service (British),Naval Criminal Investigative Service (U.S. Navy; see also NCIS, a U.S. TV series based on this unit)
NCL New Caledonia (ISO 3166 trigram)
NCLR National Council of La Raza
NCMO No Commitment Make Out
NCND Noncircumvention and Nondisclosure, Neither Confirm Nor Deny
NCO Noncommissioned Officer
NCP Net Contracted Purchases
NCR National Cash Register Co.
NCTR Noncooperative Target Recognition
NCW Network Centric Warfare
nd Northern Ndebele language (ISO 639-1 code)
Nd Neodymium
ND Nondisclosure, North Dakota (postal symbol)
NDAA U.S. National Defense Authorization Act
NDBP Non-Departmental Public Body (Scotland)
NDCC New Directions Counseling Center (Concord, California)
nde Northern Ndebele language (ISO 639-2 code)
NDH Neue Deutsche Härte (German, "new German hardness"—heavy metal genre),Nezavisna Država Hrvatska (Croatian, "Independent State of Croatia"—Nazi puppet state)
ndo Ndonga language (ISO 639-2 code)
NDP New Democratic Party (Canada)
NDS Nintendo DS
NDU National Defense University (Washington, DC)
ne Nepali language (ISO 639-1 code)
Ne Neon
NE Nebraska (postal symbol),Niger (ISO 3166 digram), North-East
NEA National Education Association (U.S. labor union),Near-Earth Asteroid,Nuclear Energy Agency (OECD)
NEAT Near-Earth Asteroid Tracking-,National Emergency Access Target (Au Health)
NEC Network-enabled capability,Nijmegen Eendracht Combinatie (Dutch, "Nijmegen Unity Combination"; football club formed by the 1910 merger of the Nijmegen and Eendracht clubs),Nippon Electric Company, the original English-language name of the company now known as NEC,Northeast Conference (U.S. college sports)
NED Netherlands (IOC and FIFA trigram, but not ISO 3166)
NECTEC National Electronics and Computer Technology Center (Thailand)
NEI National Eye Institute-Not Enough Information-Nuclear Energy Institute
NEMS National Energy Modeling System (USDOE-EIA)
NEO Near-Earth Object,Non-combatant Evacuation Operations
nep Nepali language (ISO 639-2 code)
NEPA National Environmental Policy Act
NER Niger (ISO 3166 trigram)
NERICA New Rice for Africa
NESDIS National Environmental Satellite, Data and Information Service
NESP NSA/CSS Enterprise Standards Program
NET National Educational Television
NETCU (UK) National Extremism Tactical Co-ordination Unit
NETL (US) National Energy Technology Laboratory
NETWARS Network Warfare Simulation
NEWS Navy Electronic Warfare Simulator,North, East, West, South
NEX Navy EXchange
nF Nanofarad
NF Newfoundland (and Labrador) (obsolete postal code, replaced by NL),Norfolk Island (ISO 3166 digram)
NFA (U.S.) National Firearms Act (often used to refer to the guns and accessories regulated under this law),No-Fire Area
NFC National Football Conference,Near field communication
NFER National Foundation for Educational Research
NFG No Fucking Good
NFHS National Federation of State High School Associations
NFI Not F****** Interested
NFK Norfolk Island (ISO 3166 trigram)
NFL National Football League,No-Fire Line
Nfld Newfoundland
NFPA National Fluid Power Association (United States)
NFT No Further Text
ng Nanogram-Ndonga language (ISO 639-1 code)
NG Natural Gas,Next Generation, Niger (FIPS 10-4 country code),Nigeria (ISO 3166 digram)
NGA National Geospatial-Intelligence Agency, Nigeria (ISO 3166 trigram)
NGH Northern General Hospital
NGATS New Generation Army Targetry System
NGIC National Ground Intelligence Center ("Injick")
NGN Nigerian naira (ISO 4217 currency code)
NGO non-governmental organization
NGR Nigeria (IOC trigram, but not ISO 3166 or FIFA)
NGS Naval Gunfire Support
nH Nanohenry
NH New Hampshire (postal symbol)-New Hebrides (ISO 3166 digram; obsolete 1980)-Vanuatu (FIPS 10-4 country code; from New Hebrides)
NHANES National Health and Nutrition Examination Survey
NHB New Hebrides (ISO 3166 trigram; obsolete 1980)
NHB No Holds Barred radio (Link)
NHL National Hockey League
NHO Næringslivets Hovedorganisasjon (Confederation of Norwegian Enterprises, a Norwegian employers' organisation)
NHRA National Hot Rod Association
NHS National Health Service (UK)
Ni Nickel
NI Nicaragua (ISO 3166 digram),Nigeria (FIPS 10-4 country code)
NIAAA U.S. National Institute on Alcohol Abuse and Alcoholism
NIAID National Institute of Allergies and Infectious Disease
NIAG NATO Industrial Advisory Group
NIAMD National Institute of Arthritis and Musculoskeletal Diseases
NIB New In Box (Internet auction/trading listings)
NIBP Non-invasive blood pressure monitor
NIC Network Interface Card, Nicaragua (ISO 3166 trigram)
NicA Nicotine Anonymous
NICAP National Investigations Committee on Aerial Phenomena
NICE UK. National Institute for Health and Clinical Excellence
NICHD National Institute of Child Health and Human Development [4]
NICP National Inventory Control Point
NIDDK National Institute of Diabetes and Digestive and Kidney Diseases
NIDRR National Institute on Disability Research and Rehabilitation
NIEHS National Institute of Environmental Health Sciences
NIG Niger (IOC and FIFA trigram, but not ISO 3166)
NIH National Institutes of Health,Not Invented Here
NIIN National Item Identification Number
NIMA National Imagery and Mapping Agency (became NGA)
NIMBY Not In My Back Yard (See NOME)
NIMG Not In My Generation
NiMH nickel metal hydride ("Ni" is the chemical symbol for nickel)
NIMH National Institute of Medical Herbalists,National Institute of Mental Health
NIN Nine Inch Nails (band)
NIO Nicaraguayan cordoba oro (ISO 4217 currency code)
NIOSH National Institute for Occupational Safety and Health (U.S.)
NIPR National Institute of Polar Research (Japan)
NIR Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
NISAC U.S. National Infrastructure Simulation and Analysis Center
NISCAP NSA Information System Certification and Accreditation Program
NISER National Institute of Science Education and Research
NIST (a/i) National Institute of Standards and Technology
NIT National Invitation Tournament (U.S. college basketball), National Institutes of Technology (India)
NITFS National Imagery Transmission Format Standard
NIU Niue (ISO 3166 trigram)
nJ Nanojoule
NJ New Jersey (postal symbol)
NJHS National Junior Honor Society
NJPW New Japan Pro-Wrestling
nK Nanokelvin
NKA No Known Allergies
NKVD Narodnyi Komissariat Vnutrennikh Del (Russian "People's Commissariat of Internal Affairs") (1934-1954)
nl Dutch language (ISO 639-1 code)
nL Nanolitre
NL Netherlands (ISO 3166 and FIPS 10-4 country code digram),Newfoundland and Labrador (postal symbol)
NLB Non-Linear Battlefield
nld Dutch language (ISO 639-2 code)
NLD Netherlands (ISO 3166 trigram)
NLF National Liberation Front (disambiguation)
NLL National Lacrosse League
NLP Natural Language Processing,Neuro-Linguistic Programming (pseudoscience)
NLW Non-Lethal Weapon
nm nanometer
NM New Mexico (postal symbol)
NMCI Navy Marine Corps Intranet
NMCS Not Mission Capable Supply (SM&R code)
NMD U.S. National Missile Defense
NMN No middle name
NMOS (i/a) N-type/Negative Metal-Oxide-Semiconductor transistor ("enn-moss")
NMSG NATO Modelling and Simulation Group
NMR Nuclear Magnetic Resonance
NMHNFG Not Made Here, No Fucking Good
nn Norwegian Nynorsk language (ISO 639-1 code)
nN Nanonewton
NNE North North-East
nno Norwegian Nynorsk language (ISO 639-2 code)
NNSA U.S. National Nuclear Security Administration
NNW North North-West
no Norwegian language (ISO 639-1 code)
No Nobelium
NO Nitric Oxide, Normally Open, Norway (ISO 3166 and FIPS 10-4 country code digram)
NOAA U.S. National Oceanic and Atmospheric Administration
NOAF Norwegian Air Force
NOAO National Optical Astronomy Observatory
nob Norwegian Bokmål language (ISO 639-2 code)
NOC UK. National Oceanography Centre
NODEF NATO Oceanographic Data Exchange Format
NOK Norwegian krone (ISO 4217 currency code)
NOLA New Orleans, Louisiana (LA is the official postal code for Louisiana)
NOGI New Orleans Grande Isle (award for diving)
NOLF Navy OutLying Field
NOM Novus Ordo Missae or New Ordinary of the Mass (sometimes abbreviated to simply "NO")
NOME Not on Mars Either
NoMBO Non-mine, Mine-like Bottom Object
NOME Not on Mars Either (see NIMBY)
NOPA National Office Products Alliance-National Office Products Association
nor Norwegian language (ISO 639-2 code)
NOR Norway (ISO 3166 trigram)
NORAD North American Aerospace Defense Command
NORCECA North, Central America and Caribbean Volleyball Confederation
NORELPREF No religious preference
NORML National Organization for the Reform of Marijuana Laws ("normal")
NORTHAG Northern Army Group
NOS Network Operating System,New Old Stock (Internet auction/trading listings),Nitric Oxide Synthase (enzyme)
NOSA NATO OSI Security Architecture
NOTAFLOF No One Turned Away For Lack Of Funds
NOTAM Notice to Airmen
NOW National Organization for Women
Np Neap tide (nautical charts), Neptunium
NP National Permit (authorization used in India to allow trucks to go anywhere in the nation),Nepal (ISO 3166 and FIPS 10-4 country code digram)
NPB Nippon Professional Baseball
NPC National Postgraduate Committee,National Provincial Championship (New Zealand rugby competition, now superseded by the Mitre 10 Cup and Heartland Championship),Navigation Planning Chart,Non-Player Character (role-playing games)
NPCS Non-Passenger Coaching stock (in Railways)
NPD Nationaldemokratische Partei Deutschlands (German)
NPDI New Product Development and Introduction
NPG Needline/Network Participation Group
NPH Normal Pressure Hydrocephalus
NPL National Priorities List, Nepal (ISO 3166 trigram)
NPOV Neutral Point Of View
NPR National Public Radio, Nepalese rupee (ISO 4217 currency code),NQ[edit]
NQ Dronning Maud Land (ISO 3166 digram; obsolete 1983)
NQOCD Not Quite Our Class, Dear (or Darling). (Upper-class English slang)
NPO -,nothing by mouth,NR[edit]
nr Southern Ndebele language (ISO 639-1 code)
NR Nauru (ISO 3166 and FIPS 10-4 country code digram)
NRA National Rifle Association
NRAO National Radio Astronomy Observatory
NRC National Research Council (U.S.)-Nuclear Regulatory Commission (U.S.)
NRDC (U.S.) Natural Resources Defense Council
NREL U.S. National Renewable Energy Laboratory
NRK Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
NRMP National Resident Matching Program (U.S. medicine)
NRO U.S. National Reconnaissance Office
NRT Near Real Time
NRTA
NRU Nauru (ISO 3166 trigram)
ns Nanosecond
nS Nanosiemens
NS Norfolk Southern Railway (AAR reporting mark),Nova Scotia (postal symbol),Suriname (FIPS 10-4 country code)
NSA U.S. National Security Agency,Naval Support Activity,No Strings Attached
NSABB National Science Advisory Board for Biosecurity
NSAID Non-Steroidal Anti-Inflammatory Drug
NSB Norges Statsbaner (Norwegian State Railways)
NSBM National Socialist black metal
NSC National Security Council
NSDAP Nationalsozialistische Deutsche Arbeiterpartei (German: "German National Socialist Workers Party", the formal name of the Nazi Party)
NSDL National Science Digital Library (US)
NSG National System for Geospatial-Intelligence
NSN National Stock Number
NSNA National Student Nurses' Association
NSO National Standardization Office (ABCA)
NSS (U.S.) Naval Simulation System
NST (UK) Nimrod Software Team
NSTAC National Security Telecommunications Advisory Committee
NSV Nikitin-Sokolov-Volkov heavy machine gun (Russian НСВ Никитина-Соколова-Волкова) ru:ПулеметНСВ-12,7 "Утес"
NSW New South Wales (postal symbol)
nT Nanotesla
NT National Trust (UK), Saudi-Iraqi neutral zone (ISO 3166 digram; obsolete 1993), New Technology (Windows NT), Northern Territory (Australia) (postal symbol),Northwest Territories (Canada) (postal symbol)
NTC National Training Center,Negative Temperature Coefficient (thermistor)
NTDS Naval Tactical Data System
NTP Network Time Protocol
NTR Network Time Reference
NTRA National Thoroughbred Racing Association
NTSB National Transportation Safety Board
NTSC National Television Standards Committee (colloquially, Never Twice the Same Color)
NTV Non-Tactical Vehicle
NTY (Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
NTZ Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
NU Nicaragua (FIPS 10-4 country code),Niue (ISO 3166 digram),Nunavut (postal symbol)
NUI No user interface ("noo-ey")
NUL Null character (ASCII code of control character),National Urban League
NUTS Nuclear Utilization Target Selection
NUWC U.S. Naval Undersea Warfare Center
nv Navajo language (ISO 639-1 code)
nV Nanovolt
NV Naamloze vennootschap (Dutch, "innominate partnership" or "anonymous venture"; i.e. a public limited-liability company), Nevada (postal symbol)
NVEOL Night Vision and Electro-Optics Laboratory
NVESD CERDEC Night Vision and Electronic Sensors Directorate, Fort Belvoir, Virginia
NVG Night Vision Goggles
NVL Night Vision Laboratory
nW Nanowatt
NW North-West
NW Nuclear Weapon
NWA National Wrestling Alliance
NWF National Wildlife Federation
NWFZ Nuclear-Weapon-Free Zone
NWHN U.S. National Women's Health Network
nWo New World Order (see article for explanation of idiosyncratic capitalization)
NWOAHM New Wave of American Heavy Metal
NWOBHM New wave of British heavy metal (sometimes pronounced /nəˈwɒbəm/ as if it were an acronym)
NWRA National Wildlife Rehabilitators Association
NWSL National Women's Soccer League (U.S.)
NWT North-West Territories
NX Part of computer memory marked as "no execute"-Automobile made by Nissan-unit of illuminance-National Express-Net exports
NXA 21st arcade game in the Pump It Up series
NXD Native XML
NXE New Xbox Experience
NXG New Cross Gate station
NXL National XBall League
NXN Nike Cross Nationals
NXP "Next Experience" Semiconductors
ny Chichewa language (ISO 639-1 code)
NY New York (postal symbol)
nya Chichewa language (ISO 639-2 code)
NYHA New York Heart Association
NYO National Youth Orchestra of Great Britain
NYRA National Youth Rights Association-New York Racing Association (horse racing)
NYSE New York Stock Exchange
NZ New Zealand (ISO 3166 and FIPS 10-4 country code digram)
NZC New Zealand Cricket
NZD New Zealand dollar (ISO 4217 currency code)
NZL New Zealand (ISO 3166 trigram)
NzL Noze looan (online/event listings)
NZOSS New Zealand Open Source Society
NZR New Zealand Railways,New Zealand Rugby (governing body for rugby union)
NZRU New Zealand Rugby Union, the former name of the organisation now known as New Zealand Rugby
O Oberst-Observer-Obstacle-Octal-
Officer Official-Oh-Operational-
Operator Oprah (magazine)-Outstanding-Oxygen
OA Operational Analysis-Overeaters Anonymous
OAC On Approved Credit
OAP Old Age Pensioner (UK)
OAS Organization of American States
OARSI Osteoarthritis Research Society International
OASIS Objects and Agents for Information Systems and Simulation-Organization for the Advancement of Structured Information Standards
OASIS Ontario Agencies Supporting Individuals with Special Needs
OASIS Ontario Association of Sewage Industry Services
OASP Operational Analysis Support Paper/Plan
OAU Organization for African Unity
ob obiit (Latin, " he died")
OB
Obstetrics Ocean Beach (California)-Off Break (cricket)-Old Bryanstonian-
OBE Officer of the Order of the British Empire
OBJ Objective (military parlance)
OBM Obsidian Black Metallic (automobile paint color)
OBS Observation/Observer-Obsolete-Obstacle-
OBSS
OBX Outer Banks (North Carolina)
oc Occitan language (ISO 639-1 code)
OC Officer Commanding
OCA Observatoire de la Côte d'Azur-Offensive Counter-Air
OCD Obsessive-Compulsive Disorder
OCFS Oracle Cluster File System
OCFS2 Oracle Cluster File System Release 2
oci Occitan language (ISO 639-2 code)
OCIDS Optical Combat Identification System
OCMCC [2] Orchard County MCC
OCN Oncology Certified Nurse
OCO Oort Cloud Object
OCOKA Observation, Cover and concealment, Obstacles, Key terrain, and Avenues of approach (mnemonic)
OCR Optical Character Recognition
OCS see entry
OD Old Dragon,Ordnance Datum (nautical charts), Overdose
ODAS OCA-DLR Asteroid Survey
ODB Ol' Dirty Bastard (rapper), One Dirty B*tch/Broad/Babe (professional wrestler), Operational Data Base, Original David Baker (professional poker player; used to distinguish from another professional poker player of the same name), Oxford Dictionary of Byzantium
ODBC Open DataBase Connectivity
ODI Office for Disability Issues (UK government agency),One Day International (cricket),Open Data-Link Interface,Oracle Data Integrator,Overseas Development Institute (UK think tank),OE[edit]
OEA (U.S.) Office of Economic Adjustment
OED Oxford English Dictionary
OECD Organisation for Economic Co-operation and Development (international)
OEG Operation Exposure Guidance
OEIS On-Line Encyclopedia of Integer Sequences
OEM Original Equipment Manufacturer
OFA Occipital Face Area
OFDA U.S Agency for International Development's Office of Foreign Disaster Assistance
OGC Open Geospatial Consortium
OGD Other Government Department
OGO Other Government Organization
OGX OUARGLA-a petroleum state in the south of Algeria
OH Ohio (postal symbol)
OHC OverHead-Cam engine
OHHLA Original Hip-Hop Lyrics Archive
OHIP Ontario Health Insurance Plan
OHMS On Her (or His) Majesty's Service (also written: O.H.M.S.)
OHP Observatoire de Haute-Provence
OHSS Ovarian Hyperstimulation Syndrome
OIC Officer In Charge
OIE World Organisation for Animal Health (originally the Office international des épizooties, French for "International Epizootic Office")
OIF Operation Iraqi Freedom
OIOC Oriental & India Office Collections (in the British Library)
oj Anishinaabe language (Ojibwa) (ISO 639-1 code)
OJ Orange Juice-O.J. Simpson
oji Anishinaabe language (Ojibwa) (ISO 639-2 code)
OJT On-the-Job Training
OK Oklahoma (postal symbol), oll korrect (facetious alteration of "all correct", 1839)
OKC Oklahoma City
OLED Organic Light-Emitting Diode
OLS Operational Linescan System
om Oromo language (ISO 639-1 code)
OM Oman (ISO 3166 digram)-Olympique de Marseille (French football club)
OMA Open Mobile Alliance-Operations & Maintenance, Army
OMB U.S. Office of Management and Budget-Ontario Municipal Board-Order of Mapungubwe in Bronze
OMD Orchestral Manoeuvres in the Dark (1980s pop group)
OME Osaka Mercantile Exchange
OMFG Oh My Fucking God
OMG Oh My God or Or My Gosh
OMGW "Oh My Gosh it's Windy"
OMN Oman (ISO 3166 trigram)
OMNCS U.S. Office of the Manager for the National Communications System
OMP Order of Mapungubwe in Platinum
OMR Omani rial (ISO 4217 currency code)
OMS Order of Mapungubwe in Silver
OMT Object Model Template
OMW On My Way, Oh My Word
ON Ontario (postal symbol)
Onna Oniong, Nnung Ndem, and Awa, a Local Government Area in Nigeria
ONC Orthopaedic Nurse Certified
ONCE Organización Nacional de Ciegos Españoles (Spanish, "National Organization for the Spanish Blind")
ONG Orthodontic National Group
ONH Óglaigh na hÉireann (Irish idiom for "soldiers of Ireland"), used for the following:
ONI (U.S.) Office of Naval Intelligence
ONS Operational Needs Statement
OO Object Oriented-Over & Out
OOO Out Of the Office
OOAD Object Oriented Analysis and Design
OOBE Out-of-body experience
OOCL Orient Overseas Container Line
OODA Observation, Orientation, Decision, Action loop (a.k.a. Boyd's Loop)
OOMF One Of My Followers
OOP Object-Oriented Programming-Out Of Print
OOS
OOTW Operations Other Than War
OP Observation Point/Post,Ocean Pacific (surfwear and swimwear brand),Original Poster (internet),Order Point, in inventory management; the inventory state at which more items should be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached, order OQ new items),Overpowered, often used to refer to fictional characters (e.g. Superman) or game mechanics (e.g. the Black Lotus in Magic: the Gathering) that are considered disproportionately strong
OPA Other Procurement, Army
OPAC Online Public Access Catalogue
OPCON Operational control
OPCW Organisation for the Prohibition of Chemical Weapons
OPEC Organization of the Petroleum Exporting Countries
OPFOR Opposing force
OPI Office of Primary Interest,Open Prepress Interface
OPINTEL Operational Intelligence
OPLAN Operation plan (also OpPlan)
OPORD Operation order
OPP Ontario Provincial Police,Operational Planning Process,Other People's Property/Pussy/Penis (song)
OPS On-base plus slugging (baseball statistics), Operations
OPSEC Operations security,Open Platform for Security
OPSI Overwhelming post splenectomy infection,UK Office of Public Sector Information
OPTAR Operational target
OPV Offshore Patrol Vessel
OQ Order Quantity, in inventory management; the quantity of new items to be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached, order OQ new items)
or Oriya language (ISO 639-1 code)
OR Operating Room (surgery)-Operational/Operations Research-Oregon (postal symbol)-overreciprocation-when the leader of an inner circle friendship contacts a friend more than is wanted or reasonable
ORAU (a/i) Oak Ridge Associated Universities
ORB (a/i) Object Request Broker
ORBAT Order of Battle
ORD O'Hare International Airport in Chicago, Illinois (IATA Airport Code ORD)
ORD Office of Research and Development-Operational Requirements Document
ORF Operational iness Float
ori Oriya language (ISO 639-2 code)
ORISE Oak Ridge Institute for Science and Education
orm Oromo language (ISO 639-2 code)
ORNL Oak Ridge National Laboratory
ORR Oak Ridge Reservation (U.S. DOE)-Office of Rail Regulation (UK government)-
ORSA Oxacillin-resistant Staphylococcus aureus-Operations Research Society of America
OS Operating System
os Ossetic language (ISO 639-1 code)
Os Osmium
OSA Order of St. Augustine
OSCE Organization for Security and Co-operation in Europe
OSD U.S. Office of the Secretary of Defense-On-screen Display
OSDL Open Source Development Labs
OSE Own Separate Entrance
OSERS U.S. Department of Education Office of Special Education and Rehabilitative Services
OSETI Optical SETI also Optical SETI
OSHA Occupational Safety and Health Administration
OSI
OSIA (U.S.) On-Site Inspection Agency
OSL Open Source License-Optically Stimulated Luminescence-Orbiting Solar Laboratory
OSIRIS Optical, Spectroscopic, and Infrared Remote Imaging System (astronomical system on the Rosetta spacecraft),Optical System for Imaging and low Resolution Integrated Spectroscopy (astronomical system on the land-based Gran Telescopio Canarias)
OSM One Saturday Morning
OSPA Operations Security Professional's Association site of OSPA
OSPA Oregon School Psychologists Association [3]
OSRH Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
oss Ossetic language (ISO 639-2 code)
OSS Office of Strategic Services (1942-1945, forerunner of CIA)
OSU Ohio State University-Oklahoma State University
OTA Occupational Therapy Assistant, Office of Technology Assessment-(a/i) Orthodontic Technicians Association
OTAC Orthodontic Technicians Association Conference-Orthodontic Technicians Association Council
OTB Off The Ball-Offtrack Betting-OneSAF Testbed (a descendant of ModSAF)
OTC Over-The-Counter (drugs)
OTD Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
OTEA (U.S. Army) Operational Test Evaluation Agency
OTI Office of Transition Initiatives (United States Agency for International Development)
OTO Ordo Templi Orientis (Latin, "Order of the Temple of the East", i.e. the Order of Oriental Templars)
OTOH On The Other Hand
OTS Off the scale, sexually untouchable except for a lot of money.
OTSBH Over The Shoulder Boulder Holder
OTW On The Way
OTYBL Over To You Blue Leader
OTYRL Over To You Red Leader
OU University of Oklahoma
OVC Overcast (METAR Code)-Ohio Valley Conference
OVV Optically Visually Violent, or Optically Violently Variable-a type of quasar
OW Old Wykehamist
OWN Oprah Winfrey Network
OX IATA code for Orient Thai Airlines
OXC Optical cross-connect
OXF IATA code for London Oxford Airport
OXM Official Xbox Magazine
OXR IATA code for Oxnard Airport
OXT Oxytocin
Oy Osakeyhtiö (Finnish, "stock company")
Oyj Julkinen osakeyhtiö (Finnish, "public stock company")
OZ (?) Australia
p pico
P Peta-Phosphorus
P2P Peer-to-peer (networking)
pa Punjabi language (ISO 639-1 code)
pA picoampere
Pa pascal,Protactinium
PA (a/i) Pamela Anderson, Panama (ISO 3166 digram),Paraguay (FIPS 10-4 country code), Partial Agonist, Pennsylvania (postal symbol),petampere, PolyAmide (Nylon),Prince Albert piercing,Public Address (vocal amplification system),Public Affairs,PA 6-Nylon 6 (PolyAmide) (similarly for PA 11, 12, 46, 66, 610)
PAA Position Area for Artillery
PAB Panamanian balboa (ISO 4217 currency code)
PABX Private Automated Branch eXchange (company phone system)
PAC Pan Africanist Congress, Partial Solar Calibrator,Patriot Advanced Capabilities,Political action committee,(a/i) Primary Auditory Cortex
PACOM (U.S.) Pacific Command
PADD Personal Access Display Device (as seen in the Star Trek franchise),Petroleum Administration for Defense Districts, used for data collection in the U.S. petroleum industry
PADI Professional Association of Diving Instructors
PAEK PolyArylEtherKetone
PAFC Plymouth Argyle Football Club
PAH Polycyclic aromatic hydrocarbon
PAHO Pan American Health Organization
PAI PolyAmide Imide,Pre-Approval Inspection (pharma)
PAK Pakistan (ISO 3166 trigram)
Pakistan Punjab, Afghan states, Kashmir, sIndh, baluchiSTAN
PAL Phase Alternating Line (TV standard), Philippine Airlines
PAM (a/i) Precision Attack Missile
Pamida Patrick, Michael, and David, sons of the department store chain's co-founder Jim Witherspoon
PAMELA Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics, Pedestrian Accessibility and Movement Environment Laboratory
pan Punjabi language (ISO 639-2 code)
PAN Panama (ISO 3166 trigram), Partai Amanat Nasional (Indonesian, "National Mandate Party")-Indonesian political party,Partido Acción Nacional (Spanish, "National Action Party")-political parties in El Salvador, Mexico, and Nicaragua,Partido de Avanzada Nacional (Spanish, "National Advancement Party")-Guatemalan political party,Personal Area Network, PolyAcryloNitrile, Programa de Asistencia Nutricional (Spanish, "Nutritional Assistance Program")-U.S. federal program for nutritional needs of poor families in Puerto Rico
PANS Pretty Advanced/Awesome Network Services (cf. POTS)
PAO Panathinaikos Athlitikos Omilos (Greek: Παναθηναϊκός Αθλητικός Όμιλος, "Pan-Athenian Athletic Club"),Public Affairs Officer
PAOK Panthessalonikeios Athlitikós Ómilos Konstantinoupoliton (Greek Πανθεσσαλονίκειος Αθλητικός Όμιλος Κωνσταντινοπολιτών, "Pan-Thessalonian Athletic Club of Constantinopolites")
PAPI Precision Approach Path Indicator (aviation)
PAR Paraguay (IOC and FIFA trigram, but not ISO 3166)
PARC Palo Alto Research Center
PAROS Prevention of an Arms Race in Outer Space (treaty)
PARP (NATO Partnership for Peace) Planning And Review Process
PARWIG Power Augmented Ram Wing In Ground (aeroplane wing shape)
PAS See entry
PASA PolyAmide, Semi-Aromatic (Nylon)
PASGT Personnel Armor System, Ground Troops
PASR Personnel Accounting and Strength Reporting
PatD Panic! at the Disco
PATH Port Authority Trans-Hudson
PAWS Phased Array Warning System,Progressive Animal Welfare Society
PAYD Pay As You Drive
PAYE Pay As You Earn
Pb Lead (Latin Plumbum)
PB PolyButylene
PBA Philippine Basketball Association,Professional Bowlers Association
PBB PolyBrominated Biphenyl
PBCK Problem Between Chair and Keyboard (computer help desk in-joke)
PBD PolyButaDiene
PBDE PolyBrominated Diphenyl Ether
PBI PolyBenzImidazole
PBN PolyButylene Naphthalate
PBOH Please Become Old History
PBR Pabst Blue Ribbon (beer brand),Professional Bull Riders
PBS Pharmaceutical Benefits Scheme (Australia),Public Broadcasting Service (U.S.),Public Broadcasting Services (Malta)
PBRT may stand for: Physically Based Raytracing, an open source software rendering system for physically correct image synthesis.
PBT PolyButylene Terephthalate
PBX Private Branch eXchange (company phone system)
pC picocoulomb
PC petacoulomb,U.S. Pacific Islands Trust Territory (ISO 3166 digram; obsolete 1986), Personal computer,Player Character (roleplaying),Politically Correct / Political Correctness,post cibum (Latin, "after meals")
PCAS Planet-Crossing Asteroid Survey
PCB see entry
PCC NATO Partnership Coordination Cell,Posterior Cingulate Cortex,Pre-Command Course,Presidents Conference Committee
PCCB Porsche Ceramic Composite Brake
PCCIP President's Commission on Critical Infrastructure Protection
PCE PerChlorEthylene
PCI U.S. Pacific Islands Trust Territory (ISO 3166 trigram; obsolete 1986), Peripheral Component Interconnect (computer bus)
PCIe Peripheral Component Interconnect Express (computer bus)
PCL Passive Coherent Location
PCMCIA Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
PCN Pitcairn Islands (ISO 3166 trigram)
PCP phencyclidine,Pneumocystis jiroveci pneumonia (formerly Pneumocystis carinii), Probabilistically Checkable Proof
PCPI Physician Consortium for Performance Improvement (AMA)
PCR Polymerase chain reaction
PCSSD Pulaski County Special School District
PCT Pacific Crest Trail,Patent Cooperation Treaty
PCTE Portable Common Tool Environment, Punjab College of Technical Education
PCZ Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
Pd Palladium
PD per diem (Latin: (calculated) by the day),Point of Departure,Police Department,Postal District,Potential Difference,Principal Deputy,Privatdozent,Public domain
PD Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
PDA Personal Digital Assistant,Predicted Drift Angle,Public Display of Affection,Push-Down Automaton
PDD Past Due Date,Presidential Decision Directive
PDF Panama[nian] Defense Forces (abolished 1990),Portable Document Format,Principal Direction of Fire
PDG President Director General,Product Development Group
PDL Premier Development League (U.S. minor soccer league),Pure Dumb Luck (Texan punk band)
PDN Pull-Down Network
PDP Programmable Data Processor,Performance Development Plan[1]
PDQ Pre-Defined Queries (Siebel packages),Pretty Damn Quick
PDRY People's Democratic Republic of Yemen (obsolete since 1990)
PDT Pacific Daylight [Saving] Time (UTC-7 hours)
PDU Police Dog Unit,Power Distribution Unit,Protocol Data Unit
PDVSA (a/i) Petróleos de Venezuela, S.A. (Spanish, "Venezuelan Petroleum Company")
PE Professional Engineer
PE Ice Pellets (old style METAR Code)-Peru (ISO 3166 and FIPS 10-4 country code digram)-Physical Education-Premature Ejaculation-Prince Edward Island (postal code)-Price to Earning ratio (used for equity shares)-Plant Extract
PEBCAC Problem Exists Between Chair and Computer (IT help desk in-joke)
PEBKAC Problem Exists Between Keyboard and Chair (ditto)
PEEK PolyEtherEtherKetone
PEET Partnerships for Enhancing Expertise in Taxonomy
PEGIDA Patriotische Europäer gegen die Islamisierung des Abendlandes (German, "Patriotic Europeans Against the Islamization of the West")
PEI Prince Edward Island-PolyEtherImide
PEK PolyEtherKetone
PEN Peruvian sol (ISO 4217 currency code), Poets, Essayists and Novelists, the original meaning of the initialism of the organization now known as PEN International,PolyEthylene Naphthalate
PEO Παγκύπρια Εργατική Ομοσπονδία (Greek for "Pancyprian Federation of Labour")-
PEPFAR President's Emergency Plan For AIDS Relief
PER Peru (ISO 3166 trigram)
perl usually lower case Practical Extraction and Report Language
PES PolyEtherSulfone
PEST UK Public Engagement with Science and Technology
PET (a/i) Personal Electronic Transactor-
PETA (a/i) pentaerythritol triacrylate-People Eating Tasty Animals-People for the Ethical Treatment of Animals
PETE PolyEthyleneTErephthalate
PETP PolyEthyleneTerePhthalate
pF picofarad
PF French Polynesia (ISO 3166 digram),petafarad, Phenol Formaldehyde (resin),Power forward, a player position in Australian rules football, basketball, and ice hockey
PFD Permanent Fund Dividend = personal flotation device
PFE Permanent Forest Estate
PFLAG Parents, Families and Friends of Lesbians and Gays ("pee-flag")
PFIY Please Fix it Yourself ("pee-fiy")
PFO Pissed, Fell Over (medical diagnosis in-joke)
PfP Partnership for Peace
PFW Pro Football Weekly (magazine and website covering the National Football League),Purdue University Fort Wayne,PG[edit]
pg picogram
Pg petagram
PG
PGCE Postgraduate Certificate in Education
PGD Pre-implantation Genetic Diagnosis
PGENI Pharmaco-Genetics for Every Nation Initiative
PGH Pre-implantation Genetic Haplotyping
PGK Papua New Guinea kina (ISO 4217 currency code)
PGM Precision-Guided Munition
PGP Pretty Good Privacy
pH parts of hydrogen (acidity/alkalinity index)-picohenry
PH Passive Homing (missile guidance system)-petahenry-
PHA PolyHydroxyAlkanoate-Potentially Hazardous Asteroid
PHL Philippines (ISO 3166 trigram)
PHQ Patient Health Questionnaire
PHP Philippine peso (ISO 4217 currency code)-PHP: Hypertext Preprocessor (originally Personal Home Page (Tools))
pi Pāli language (ISO 639-1 code)
Pi Pebi
PI PolyImide-PolyIsoprene-Private Investigator
PIB PolyIsoButylene
PIC Person In Charge
PICNIC Problem In Chair Not In Computer
PICS Private Investment Capital Subscription
PID Pelvic Inflammatory Disease-
PIF (a/i) Partners in Flight
PIG Pipeline Inspection Gauge
PIGS Passenger Inert Guidance Systems-Movable tape barrier, typically used on airport aprons to guide passengers to/from their aircraft avoiding danger areas.
PIM
PIN Personal Identification Number
PINF People In Need Foundation (Czech charitable organisation)
PIPA (a/i) Program on International Policy Attitudes
PIR Priority Intelligence Requirement
PIRA Provisional Irish Republican Army
PIREPS Pilot Reports
PITA Pain In The Ass
PITS Person In The Seat. A common problem as to why a computer is not working properly. It is a PITS issue.
pJ picojoule
PJ petajoule
PJHQ Permanent Joint Headquarters
PJs Pajamas ("pee-jayz")
K picokelvin
PK Pakistan (ISO 3166 and FIPS 10-4 country code digram)-petakelvin-
PKA previously known as-professionally known as
PKE Partnership of Kindermusik Educators[3][4][5]
PKI public key infrastructure (cryptography)
PKM Pulemet Kalashnikova Modernizirovanniy (Russian ПКМ пулемет Калашникова модернизированный, "Machinegun Kalashnikov Modernised")[2]
PKMS Pulemet Kalashnikova Modernizirovanniy Stepanova (Russian ПКМС пулемет Калашникова модернизированный Степанова, "Machinegun Kalashnikov Modernised Stepanova")[2]
PKMT Pulemet Kalashnikova Modernizirovanniy Tankoviy (Russian ПКМТ пулемет Калашникова модернизированный танковый, "Machinegun Kalashnikov Modernised Tank") (a.k.a. PKTM)[2]
PKR Pakistani rupee (ISO 4217 currency code)
PKT Pulemet Kalashnikova Tankoviy (Russian ПКТ пулемет Калашникова танковый, "Machinegun Kalashnikov Tank")[2]
PKTM Pulemet Kalashnikova Tankoviy Modernizirovanniy (Russian ПКТМ пулемет Калашникова танковый модернизированный, "Machinegun Kalashnikov Tank Modernised") (a.k.a. PKMT)[2]
PKU Phenylketonuria
pl Polish language (ISO 639-1 code)
pL picolitre
PL
PLAF (a/i) People's Liberation Armed Forces-Pluggable look and feel-Product Line Architecture Framework
PLAID Precision Location and Identification
PLB Personal Locator Beacon
PLC Public Limited Company (British)
PLCC Plastic Leaded Chip Carrier (electronics)
PLD Probable Line of Deployment
PLEBS People Lacking Everyday Basic Skills
PLF Parachute Landing Fall
PLGR Precision Lightweight GPS Receiver ("plugger")
pli Pāli language (ISO 639-2 code)
PLI Position Location Information-Private Lands Initiative-Professional Liability Insurance
PLIF Planar Laser-Induced Fluorescence
PLK Polska Liga Koszykówki (Polish, "Polish Basketball League")
PLKK Polska Liga Koszykówki Kobiet (Polish, "Polish Women's Basketball League")
PLL Phase-Locked Loop (electronics)
PLM Polarized Light Microscope/Microscopy
PLMBA -,Phospholipid Bilayer Microarray
Pln Platoon
PLN Polish zloty (ISO 4217 currency code)
PLO Palestine Liberation Organization
PLOKTA Press Lots Of Keys To Abort
PLP Platonic Life Partner
PLS Palletized Loading System-Personal Locator System
PLUTO Pipe Line Under The Ocean
PLW Palau (ISO 3166 trigram)
pm picometre
Pm petametre-Promethium
PM Panama (FIPS 10-4 country code)-Perry Mason-Phase Modulation-
PMC Primary Motor Cortex
PMCS Partial Mission Capable Supply (SM&R code)-Power Management Control System-Professional Military Comptroller School
PME Professional Military Education
PMHT Pardon My Hashtag (Also #PMHT)
PMI Positive Material Identification
PMID PubMed Identifier
PMMA PolyMethylMethAcrylate
PMOS (i/a) P-type/Positive Metal-Oxide-Semiconductor transistor ("pee-moss")
PMS Premenstrual Syndrome
PMSC NATO Political-Military Steering Committee on Partnership for Peace
PMSL Piss Myself Laughing (Internet shorthand)
PMT Premenstrual Tension (UK) (see Premenstrual Syndrome)
pN piconewton
PN petanewton,Pitcairn Islands (ISO 3166 diagram)
PNAC Project for the New American Century
PNC Palestinian National Council,Palmerston North City (cf. PNC, a New Zealand rapper from this city),Parti nationaliste chrétien, defunct Quebec political party,Pittsburgh National Corporation, one of the two companies that merged into today's PNC Financial Services,Provident National Corporation, the other company that merged into PNC Financial Services
PNF Pilot Not Flying (aviation)
PNG Papua New Guinea (ISO 3166 trigram), Portable Network Graphics
PNP Parti national populaire, defunct Quebec political party, Partido Nuevo Progresista,Plug 'N' Play/Pray,Positive Negative Positive
PNS Pensacola, Florida (IATA airport code)
PNVS Pilot Night Vision Sensor
PNH Paroxysmal nocturnal hemoglobinuria,Police Nationale d'Haïti (French, "National Police of Haiti"),PO[edit]
Po Polonium
PO Dust Devil (METAR Code), per os (Latin, "by mouth"), Portugal (FIPS 10-4 country code)
PO Post Office
PO Purchase Order
POCD Post-Operative Cognitive Dysfunction
pod Plain Old Documentation
POD Payable on Death (banking term, and the full name of American metal band P.O.D.),Point of divergence (alternate or counterfactual history),Port of Debarkation
POE Perl Object Environment-(b) Port Of Embarkation (c) Polyol Ester (d) Power Over Ethernet
POETS Portable Occultation, Eclipse, and Transit electronic-camera System
POFF Plain Old Flat File
POG Passionfruit, Orange and Guava
POGO Project On Government Oversight
POI Program Of Instruction
POK (a/i) Plane Of Knowledge
pol Polish language (ISO 639-2 code)
POL Petroleum, Oils and Lubricants, Poland (ISO 3166 trigram)
POLAD Political Advice
POM Program Objective Memorandum,PolyOxyMethylene
POMDP Partially observable Markov decision process
POP (a/i) Point of Presence,Post Office Protocol,Progesterone Only Pill
por Portuguese language (ISO 639-2 code)
POR Portugal (FIFA and IOC trigram, but not ISO 3166), Proposed Operational Requirement
POS (a/i) Point Of Sale terminal (retail industry transaction computers), Piece Of S**t
POSH Port Outbound Starboard Home (alleged)
POSSLQ Person of the Opposite Sex Sharing Living Quarters
POT (a/i) Plane Of Tranquility
POTS Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
POV Point of view
POW Prisoner of war
pp pages, especially in references, e.g. "A. U. Thor, Title, Journal X, Vol. 1, no. 2 (2010) pp. 13-42."
PP Papua New Guinea (FIPS 10-4 country code), Passage Point,per procurationem (Latin, "by proxy")
PPA Parahippocampal Place Area,PolyPhthalAmide
PPASC (U.S.) Plans and Program Analysis Support Center
PPASSCCATAG "Proud Parents Against Singles, Seniors, Childless Couples And Teens And Gays", a fictional group formed by Marge Simpson
PPCLI Princess Patricia's Canadian Light Infantry (regiment)
PPG Pittsburgh Plate Glass (the original name of the company now known as PPG Industries),The Powerpuff Girls
PPL Pakistan Petroleum Limited,Pay per lead (marketing),Pennsylvania Power and Light, former name of the U.S. utility company now known as PPL,Pfadfinder und Pfadfinderinnen Liechtensteins (German, "Scouts and Guides of Liechtenstein"),Phonographic Performance Limited (UK performing rights organisation)
PPLI Precise Participant Location & Identification
ppm Parts Per Million
PPM Parts Per Million
PPM Project Planning and Management
PPO PolyPhenylene Oxide
PPP Point-to-Point Protocol,Purchasing Power Parity
PPQ Pulses Per Quarter (used in music programming, sequencers)
PPQN Pulses Per Quarter Note (ditto)
PPQT Pre-Production Qualification Test
PPS post postscriptum,Precise/Precision Positioning Service (GPS),PolyPhenylene Sulfide
PPV Pay-per-view
PQ Province of Québec (obsolete postal code, replaced by QC), Parti Québécois,PR[edit]
Pr Pastor or Priest
Pr Praseodymium
PR Public Relations, Puerto Rico (postal symbol; ISO 3166 digram)
Prb Presbyter
PRBO Point Reyes Bird Observatory
PRC People's Republic of China
PRD CERDEC Product Realization Directorate
PRFG Partial Fog (METAR Code)
PRI Puerto Rico (ISO 3166 trigram)
PRK Democratic People's Republic of Korea (ISO 3166 trigram)
PRM Personnel iness Management
PRN pro re nata (Latin, "for the emergency", "as needed")
PRT Portugal (ISO 3166 trigram), Provincial Reconstruction Team
PRY Paraguay (ISO 3166 trigram)
ps Pashto language (ISO 639-1 code),picosecond
pS picosiemens
Ps petasecond
PS Palestinian Territory, Occupied (ISO 3166 digram), Personnel Services, petasiemens, post scriptum (Latin, "written after"),Power Steering,Power Supply,Public School
PooS Poo Sniffer (Internet shorthand)
PSA Paralysis Society of America,Pharmaceutical Society of Australia,Pressure-Sensitive Adhesive,Production Services Association,Prostate Specific Antigen,Public Service Announcement,Public Service Association
PSC Personal service corporation,Primary Somatosensory Cortex
PSE Palestinian Territory, Occupied (ISO 3166 trigram)
PSG Pacific Seabird Group,Paris Saint-Germain
PSI Pounds per square inch
PSI (a/i) Portable Source Initiative
PSO Peace Support Operations,Primary Standardisation Office (ABCA),Protocol Supporting Organization (of the ICANN)
PSS Personnel System Support
PST Pacific Standard Time (UTC−8 hours)
PSU Pennsylvania State University
PSV Philips Sport Vereniging (Dutch for "Philips Sports Union"),Public Service Vehicle
PsyOp Psychological Operations
pt Portuguese language (ISO 639-1 code)
pT picotesla
Pt Platinum
PT petatesla-Physical Training (in the Army)-Portugal (ISO 3166 digram)
PTA Parent-Teacher Association
PTAL Public Transport Accessibility Level
PTAN
PTCAS Physical Therapy Centralized Application System
PTES People's Trust for Endangered Species
PTFE PolyTetraFluoroEthylene
PTI Pardon the Interruption
PTL Patrol-Primary Target Line
PTO Patent and Trademark Office-Please Turn Over
PTSD Post-Traumatic Stress Disorder
PTUI (a/i) Plain-Text User Interface ("pa-too-ey") (cf CLI)
Pu Plutonium
PU Guinea-Bissau (FIPS 10-4 country code), Polyurethane, United States Miscellaneous Pacific Islands (ISO 3166 digram; obsolete 1986)
Pub Publication
PUG (a/i) PET Users Group
PUN (a/i) Pull-Up Network
PUP (a/i) Pull-Up Point
PUR Puerto Rico (IOC and FIFA trigram, but not ISO 3166)
pus Pashto language (ISO 639-2 code)
PUS United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
pV picovolt
PV petavolt
PVC
PvE Player versus Environment
PvP Player versus Player
PVR Personal Video Recorder
PvZ Plants vs. Zombies
pW picowatt
PW Palau (postal symbol; ISO 3166 digram)
petawatt
PWA Pirates With Attitude
PWBA Pension and Welfare Benefits Administration
PwC PricewaterhouseCoopers (international accounting firm)
PWC PieceWise Constant (describing a mathematical function)
PWL PieceWise Linear (describing a mathematical function)
PWLC PieceWise Linear and Concave/Convex (describing a mathematical function)
PWP Plot, What Plot? / Porn Without Plot (denotes plotless, um, "feel-good" stories in online fiction, especially fanfic or erotic fiction)
PWR Pressurized Water Reactor
PWV Pretoria-Witwatersrand-Vereeniging, the original name for the South African province now known as Gauteng, and still used to refer to the metropolitan agglomeration at the core of the province
PX Post eXchange
PY Paraguay (ISO 3166 digram)-Person-Year-Portsmouth yardstick
PYF French Polynesia (ISO 3166 trigram)
PYG Paraguayan guaraní (ISO 4217 currency code)
PYMWYMI Put Your Money Where Your Mouth Is
PZ Panama Canal Zone (ISO 3166 digram; obsolete 1980)-Pickup Zone
Q1 First Quarter
Q2 Second Quarter
Q3 Third Quarter
Q4 Fourth Quarter
QA Qatar (FIPS 10-4 country code; ISO 3166 digram)
Qantas Queensland And Northern Territory Aerial Services
QAP Quadripartite Advisory Publication ("kwapp")
QAR Qatari rial (ISO 4217 currency code)
QAT Qatar (ISO 3166 trigram)
QB Quarterback (football)
QC Quality Control-Québec (postal symbol)-Queen's Counsel
QCA Qualifications and Curriculum Authority-Quality Council of Alberta
QCD Qualified Charitable Distribution-Quantum ChromoDynamics
QD quaque die (Latin, "daily")
QDOS Quick and Dirty Operating System ("cue-doss")
QDR Quadrennial Defense Review
QDRO Qualified domestic relations order ("quad-ro")
QED quantum electrodynamics-quid es demonstrata or quod erat demonstrandum (Latin, "that proves it" or "which was to be demonstrated")
QEH Queen Elizabeth's Hospital
QFE Quoted For Emphasis-Local ground level atmospheric pressure (aeronautical Q code)
QID quater in die (Latin, "four times daily")
QIP Quadrilateral Interoperability Programme (ancestor of MIP; "quip")
QK Air Canada Jazz (IATA airline designator)
QLD Queensland, (Australia) (postal symbol)
QM Quality Management-Quantum Mechanics-Queen Mother
QNH Regional mean sea level atmospheric pressure (aeronautical Q code)
QPR Queens Park Rangers F.C. (English football team)-Quality-Price Ratio (wine evaluation term)
QPS Quark Publishing System
QR Quake Rally-Qualitative Reasoning-Queensland Rail-
QS quantum sufficit (Latin, "as much as suffices")
QSCAT Quick Scatterometer satellite
QSL Québec Sign Language
QSO Quasi-Stellar Object
QSTAG Quadripartite Standardization Agreement ("cue-stag")
QT
qu Quechua language (ISO 639-1 code)
Quango (British Commonwealth) QUasi Autonomous Non-Governmental Organisation
Quasar Quasi-stellar radio source
QUB Queen's University Belfast
que Quechua language (ISO 639-2 code)
QUIET Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
qv quod vide (Latin "which see")
QVC "Quality, Value, Convenience" (home shopping channel)
QWG Quadripartite Working Group ("qwig")
QWGAOR Quadripartite Working Group on Army Operational Research ("qwig-a-o-r")
QZ Awair (IATA airline designator)
R
R2I Resistance to Interrogation
R3P Rearm, Refuel, and Resupply Point
Ra Radium
RA Radio Australia
RA Rain (METAR Code)-Rear Area-Reinforced Alert-
RAA Royal Automobile Association-South Australia-Rear Assembly Area
RAAF Royal Australian Air Force
Rabobank Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
RAC Royal Automobile Club (in the United Kingdom, renamed RAC plc in 2002)
RACK Risk Aware Consensual Kink (SM phrase)
Racon RAdar beaCON
RADA Royal Academy of Dramatic Art
Radar Radio Detection And Ranging
RADB Real America Database-
RADb Routing Assets Data Base
RadB Rad51/Dmc1 homologous protein
RADC Region Air Defence Commander
RAE UK Royal Aircraft Establishment (-1991)
RAF Red Army Faction-Royal Air Force
RAG Raising and Giving-Rocket Antitank Grenade
RAGBRAI Register's Annual Great Bicycle Ride Across Iowa
RAM Random Access Memory-Rolling Airframe Missile-Royal Air Maroc
Ramark RAdar MARKer
RAOC Rear Area Operation Centre
RAP (a/i) Radio Access Point-
RARDE UK Royal Armament Research and Development Establishment (1962-1991)
RARE Rapid Acquisition with Relaxation Enhancement (MRI technique)
RASC Royal Army Service Corp-Former corps of British Army
RATELO Radiotelephone Operator
Rb Rubidium
RB Running Back (football)
RBAR Row By Agonizing Row-a derogatory way of describing a technique of scanning a set of records in a database to update or examine the contents of each one.
RBCI Radio Based Combat Identification
RBI Runs Batted In
RBOC (a/i) Regional Bell Operating Company ("Baby Bell")
RC see entry
RCA Radio Corporation of America,Root Cause Analysis,Royal Canadian Artillery,Royal City Avenue (famous entertainment zone in Thailand)
RCAF Royal Canadian Air Force
RCAR Research Council for Automobile Repairs ("are-car")
RCC Rescue Co-ordination Centre
RCCO Royal Canadian College of Organists
RCHA Royal Canadian Horse Artillery (regiment)
RCMP Royal Canadian Mounted Police
RCRA Resource Conservation and Recovery Act ("reck-ra" or "rick-ra")
RCS Radar Cross-Section,Reaction Control System,Revision Control System
RCT Randomized Controlled Trial,Robotically Controlled Telescope,Rugby club toulonnais (French, "Rugby Club of Toulon")
RCZ Rear Combat Zone
RD Radio Disney
RDA Research, Development, and Acquisition,Recommended Daily Allowance (Nutrition)
RDD Radiological Dispersion Device
RDDL (a/i) Resource Directory Description Language ("riddle")
RDECOM (U.S. Army) Research, Development and Engineering Command
RDM Remotely Delivered/Deliverable Mine
RDO Rapid, Decisive Operation,Regular Day Off,Remote Data Objects
RDS Remote Desktop Services (Microsoft service),Réseau des sports (French, "Sports Network" — Canadian French-language TV channel),Respiratory distress syndrome,Royal Dublin Society (see also RDS Arena, a stadium on the grounds often called "the RDS")
RDT Remote Digital Terminal
RDV Remote Detection Vehicle
Re Rhenium
RE Royal Engineers
REACH Registration, Evaluation, Authorisation and Restriction of Chemical Substances
REACT Remote Electronically Activated Control Technology
REAM Retired Educators Association of Minnesota
RECCE Reconnaissance
REEF Reef Environmental Education Foundation
REM (i/a) Rapid Eye Movement (sleep phase)-Rosicrucian Egyptian Museum
REME Royal Electrical and Mechanical Engineers
RERC Rehabilitation Engineering Research Center
RES Radiation Exposure Status-Reserve
RESNA Rehabilitation Engineering and Assistive Technology Society of North America
REU Réunion (ISO 3166 trigram)
Rf Rutherfordium
RF Radio Frequency-Receptive Field (neurophysiology)
RFA Restrictive Fire Area (military)-Royal Field Artillery
RFC Request for Comments-Royal Flying Corps (WWI precursor to RAF)
RFD Request for Documentation
RFE Request for Evaluation
RFEF Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
RFF Right of First Refusal (legal term)
RFI
RFID Radio Frequency IDentification
RFL Rugby Football League
RFL Restrictive Fire Line (military)
RFP Request for Proposal
RFQ Request for Quotation
RFT Request for Tender
RFU Rugby Football Union
Rg Roentgenium
RG Republican Guard
RGB Red Green Blue (colour model)
RGBI Red Green Blue Intensity (ditto)
Rh Rhodium
RH Southern Rhodesia (ISO 3166 digram; obsolete 1980)
RHIC Relativistic Heavy Ion Collider
RHLI Royal Hamilton Light Infantry (Canadian militia regiment)
RHO Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
RHS
RHU Replacement Holding Unit
RHWR Radar Homing and Warning Receiver ("raw" for short)
RI Rex et Imperator, Regina et Imperatrix King-Emperor
RI Rhode Island (postal symbol)
RIAA Recording Industry Association of America
RIBA Royal Institute of British Architects
RIF Reduction In Force (layoffs),Resistance Index for Frostbite,ing Is Fundamental
RIFA Red imported fire ant
RILA Retail Industry Leaders Association
RIM Remote integrated multiplexer, Australian term for a digital loop carrier,Research In Motion, former name of the BlackBerry company,Revolutionary Internationalist Movement (Maoist organization),Royal Indian Marine, former navy of British colonial India
RIMVS Retinal Imaging Machine Vision System
RINO Republican In Name Only[1]
RIP (a/i) Relief In Place, requiesca[n]t in pace (Latin for "may he/she/they rest in peace")
RIS Range Instrumentation System,Réseau Info Sports (French, roughly "Sports News Network" — Canadian French-language TV channel)
RISC Reduced Instruction Set Computer
RISD Rhode Island School of Design ("riz-dee")
RISTA Reconnaissance, Intelligence, Surveillance, and Target Acquisition (see also ISTAR)
RWH Rain Water Harvesting
RJD Reduced Julian Day
RKBA Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
RKI Robert Koch Institute, German governmental research institute in Berlin
RKO Radio-Keith-Orpheum Pictures
RL Release Line-Real Life
RLP Recognised [Operating/Operational] Land Picture
RLS Restless Leg Syndrome
RLY Rally Point
RM see separate disambiguation page
rm Raeto-Romansh language (ISO 639-1 code)
RMA Return Mailing Authorization-Revolution in Military Affairs-Rachel McAdams
RMC Robert Menzies College
RMC (ii) Royal Military College (Australia, Canada, UK)
RMDA Records Management and Declassification Agency
RMP Recognised [Operating/Operational] Maritime Picture
RMS
rn Rundi language (Kirundi) (ISO 639-1 code)
Rn Radon
RN Radio Netherlands
RN Royal Navy-Registered Nurse (US)
RNA RiboNucleic Acid
RNAD Royal Naval Armaments Depot (UK)
RNPS Radio Network Planning System
RNZ Radio New Zealand
RNZI Radio New Zealand International
ro Romanian language (ISO 639-1 code)
RO Range Only-Red Orchestra-Romania (ISO 3166 and FIPS 10-4 country code digram)
ROA (a/i) Rate Of Ascent
ROC (i/a) Receiver Operating Characteristic (statistics)-
ROD (a/i) Rate Of Descent-Record Of Decisions-Report Of Discrepancy
ROE Rules Of Engagement
roh Raeto-Romansh language (ISO 639-2 code)
ROH Ring of Honor
ROI Return On Investment, Republic of Ireland.
ROME Return On Modeling Effort
ROFLOL Rolling On the Floor Laughing Out Loud
ROK (a/i) Republic of Korea
ROL Romanian leu (ISO 4217 currency code)
ROM -Only Memory-Refuel On the Move-Royal Ontario Museum
ron Romanian language (ISO 639-2 code)
RON Romanian new leu (ISO 4217 currency code)
ROP Render Output Pipeline
ROPE Research Opportunity and Performance Evidence
ROS Reactive Oxygen Species
ROTC Reserve Officer Training Corps ("Rawt-Cee")
ROU Romania (ISO 3166 trigram)
ROV Remotely Operated Vehicle
ROW Right Of Way-Rest Of the World
ROWPU Reverse Osmosis Water Purification Unit ("roe-pew")
ROZ (a/i) Restricted Operations Zone
RP Philippines (FIPS 10-4 country code), Release Point,Role-Playing [relationship potential]
RPA Regional Plan Association
RPD Recognition-Primed Decision-making
RPF Rwandan Patriotic Front
RPG (US-CA) Regional Planning Group,Report Program Generator,Rocket Projectile Gun,Rocket-Propelled Grenade,Role-Playing Game
RPL Reverse Polish Lisp
rpm revolutions per minute
RPM Records, Promotion, Music (expansion of the title of a former Canadian music magazine),Red Hat Package Manager
RPN reverse Polish notation
RPO Radiation Protection Officer, Regular Production Option,RPR FOM-(i/a) Realtime Platform Reference Federation Object Model ("reaper fomm")
rps revolutions per second
RPV Remotely Piloted Vehicle
RQ Puerto Rico (FIPS 10-4 territory code)
RRB -Railroad Retirement Board
RRN Recurrence Rate Number
RRP Recurrent Respiratory Papillomatosis
RRS Racing Rules of Sailing
RRSP Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
RS Russia (FIPS 10-4 country code)
RSA Regimental Support Area,Republic of South Africa,Rivest-Shamir-Adleman encryption, South Africa (IOC and FIFA trigram, but not ISO 3166)
RSD Reflex Sympathetic Dystrophy, Serbian dinar (ISO 4217 currency code)
RSEQ Réseau du sport étudiant du Québec (French, "Quebec Student Sports Network")
RSI Repetitive Strain Injury
RSJ Rolled Steel Joist (construction)
RSN Real Soon Now (coined by author Jerry Pournelle)
RSPB (UK) Royal Society for the Protection of Birds
RSPCA Royal Society for the Prevention of Cruelty to Animals
RSR Required Supply Rate
RSRE UK Royal Signals and Radar Establishment (1976-1991)
RSRI Red Sands Research Institute
RSS Really Simple Syndication
RSTA Reconnaissance, Surveillance, and Target Acquisition
RSVP répondez s'il vous plaît (French for "respond if you please")
RT Real Time-Radio Telephone-Return to duty
RTA Road traffic accident (British)
RTBF Radio-Télévision belge de la Communauté française
RTCA RTCA, Inc.
RTF Rich Text Format
RTFM the Fucking/Fine Manual
RTG Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
RTGS Royal Thai General System of Transcription-Real Time Gross Settlement
RTI Run-Time Infrastructure (Simulation)
RTL see entry
RTLS Return to Launch Site-period in NASA Space Shuttle assent profile where, during assent, shuttle aborts assent and turns and glides back to landing strip at launch site
RTP Real-time Transport Protocol
RTS see entry
RTT Round Trip Timing
RTV Rapid Terrain Visualization ACTD-Retro Television Network
ru Russian language (ISO 639-1 code)
Ru Ruthenium
RU Russia (ISO 3166 digram)
RUB Russian ruble (ISO 4217 currency code)
RuBisCO Ribulose-1,5-bisphosphate carboxylase/oxygenase (enzyme involved in carbon fixation)
RUC Royal Ulster Constabulary
run Rundi language (Kirundi) (ISO 639-2 code)
rus Russian language (ISO 639-2 code)
RUS Russia (ISO 3166 trigram)
RUSI Royal United Services Institute for Defence Studies
RV Reconnaissance Vehicle,Recreational Vehicle,Re-entry Vehicle,reciprocation void
RVD Rijksvoorlichtingsdienst (Dutch, "Government Information Service"), Rob Van Dam (American professional wrestler),RW[edit]
rw Rwanda language (Kinyarwanda) (ISO 639-1 code)
RW Rwanda (ISO 3166 and FIPS 10-4 country code digram)
RWA Rwanda (ISO 3166 trigram)
RWADA Resident Weighted Average Daily Attendance (New York State term used in public education to indicate the size of a school district, i.e. its number of students)
RWF Rwandan franc (ISO 4217 currency code)
RWR Radar Warning Receiver
RWS Remote Weapon Station
Rx Medical prescription (possibly from Latin "recipere", "to take": see entry)
RX Receive
South Sulphur/Sulfur,S0-9[edit],S followed by a number is used to denote various German and Austrian S-train lines.,S4C — Sianel Pedwar Cymru (Welsh, "Channel Four Wales")
S3 Alternative to SSS (e.g. Amazon S3)
SA Sand (METAR Code),Saudi Arabia (ISO 3166 and FIPS 10-4 country's,code digram), Sexaholics Anonymous, sine anno (Latin, “without year”),Situational awareness,South Africa,(i/s) South Australia (postal symbol), Standards Australia,Sturmabteilung (German, “Storm Detachment”, Nazi forerunner and rival of SS),S.A.-designation for a corporation in many European countries; see article for meanings
SAA Saudi Arabian Airlines, former name of Saudia,Sex Addicts Anonymous,South African Airways,Southern Athletic Association,Standards Association of Australia, a former name of Standards Australia,SAAB — Svenska Aeroplan AB (Swedish aircraft manufacturer; also refers to its former auto manufacturing arm),SAAFR — (a/i) Standard use Army Aircraft Flight Route (“safer”),SAAMI — Sporting Arms and Ammunition Manufacturers' Institute (“sammy”),SAARC — South Asian Association for Regional Cooperation,SAB — Soprano Alto Baritone,Sabena — Société anonyme belge d'exploitation de la navigation aérienne (French for “Belgian Company for Exploiting Aerial Navigation”, 1923-2001),SABIC — Saudi Basic Industries Corporation,SABR — Society for American Baseball Research
SAC Standards Activity Committee (of SISO),U.S. Strategic Air Command (1946-1992),SACAT — Semi Attended Customer Activated Terminal (Supermarket checkout),SACEUR — Supreme Allied Commander EURope,SACLANT — Supreme Allied Commander atLANTic,SACLOS — Semi-Automatic Command to Line of Sight
SAD Safford Regional Airport (IATA code), Seasonal Affective Disorder,Situational Awareness Display,SADD — originally Students Against Drunk Driving, now Students Against Destructive Decisions (U.S. national school-related group)
SADL Situation Awareness Data Link (“saddle”),Structural Architecture Description Language
SAE Society of Automotive Engineers[1],Stamped addressed envelope,SAFER — Steel And Foam Energy Reduction,SAFETY — Stopping Adults Facilitating the Exploitation of Today's Youth,SAFICT — Software Agents as Facilitators of Interoperability in Collective Training,sag — Sango language (ISO 639-2 code),SAG — Screen Actors Guild,SAGAT — Situation Awareness Global Assessment Technique,SAGE — Semi-Automatic Ground Environment (simulation),SAHB — Sensational Alex Harvey Band,SAIC — Science Applications International Corporation
SALT (a/i) Save A Life Today (SALT) Alert; Emergency Contact System, Southern African Large Telescope,Strategic Arms Limitation s
SAM Sequential-Access Memory,Sociedad Aeronáutica de Medellín,Surface-to-Air Missile
Sambo (p/a) Samooborona bez oruzhiya (Russian: "Самооборона без оружия", literally "self-defense without weapons")
san Sanskrit language (ISO 639-2 code), Storage Area Network
SAR Saudi riyal (ISO 4217 currency code), Search And Rescue,Special Administrative Region,Synthetic Aperture Radar
SARA Southeastern Association for Research in Astronomy,Scientific Atlanta Resident Application,Scottish Amateur Rowing Association,Southern African Railway Association,State Administration for Religious Affairs,SARP — Search And Rescue Processor,SARR — (i/a) Search And Rescue Repeater,SARS — Severe Acute Respiratory Syndrome
SART Search and Rescue Transponder,Situational Awareness Rating Technique,SARU — South African Rugby Union
SAS Scandinavian Airlines System,Second Avenue Subway,Situational Awareness System,Special Air Service,Studies, Analysis and Simulation,Side Angle Side, Statistical Analysis System (original meaning; SAS Institute Inc. has evolved far beyond that scope),SASE — Self-Addressed Stamped Envelope,SASO — Stability and Support Operations,SASOL — Suid Afrikaanse Steenkool en Oli.e. (Afrikaans, “South African Coal and Oil”)
SAT formerly Scholastic Aptitude Test and Scholastic Assessment Test; now known solely by the initials,Small Arms Trainer,SATB — Soprano Alto Tenor Bass,SATNAV — Satellite Navigation (Increasingly common GPS based system in new vehicles),SATs — Standard Assessment Tasks and other similar terms describing tests used in English schools; see National Curriculum assessment#Terminology,SAU — Saudi Arabia (ISO 3166 trigram),SAVAK — Sazamane Etelaat va Amniate Kechvar (Iranian “Security and Intelligence Service”)
SAW Squad Automatic Weapon,Surface acoustic wave,SAWE — Society of Allied Weight Engineers,SB[edit],Sb — Antimony (Latin Stibium)
SbA Stibarsen, an alloy of antimony and arsenic
SB Sexy Bitch,Sexy Bastard,Sexy Boy (disambiguation), Solomon Islands (ISO 3166 digram), Special Warfare Boat Operator
SBA Santa Barbara Airport,Simulation-Based Acquisition,Sovereign Base Area,Student bar association,SBB — German for the Swiss Federal Railways
SBC Sensotronic Brake Control,Single-Board Computer,Southern Baptist Convention,SBCCOM — U.S. Army Soldier and Biological Chemical Command (disbanded 2003),SBCS — Single-Byte Character Set,SBCT — Stryker Brigade Combat Team
SBD Solomon Islands dollar (ISO 4217 currency code),Silent But Deadly
SBP Samahang Basketbol ng Pilipinas (Filipino, "Basketball Federation of the Philippines"),U.S. School Breakfast Program,Society of Business Practitioners,State Bank of Pakistan
SBS Special Boat Service,Special Broadcasting Service,Seoul Broadcasting System
SBW Sonny Bill Williams (New Zealand dual-code rugby player),SC[edit],sc — Sardinian language (ISO 639-1 code),Sc — Scandium
SC Cruiser Submarine (US Navy hull classification) c Saint Kitts and Nevis (FIPS 10-4 country code; from Saint Christopher),Seychelles (ISO 3166 digram),South Carolina (postal symbol)
SCA Service Contract Act,Sexual Compulsives Anonymous,Society for Creative Anachronism,SCAP — Supreme Commander Allied Powers (Allied occupation of Japan),sccm — Standard cubic centimetre per minute (unit of measurement of fluid flow),sccs — Standard cubic centimetre per second (unit of measurement of fluid flow),scfh — Standard cubic foot per hour (unit of measurement of fluid flow),scfm — Standard cubic foot per minute (unit of measurement of fluid flow),scfs — Standard cubic foot per second (unit of measurement of fluid flow),SCG — Serbia and Montenegro (ISO 3166 trigram; defunct since 2006),SCHIMS — Soldier Combat Helmet Identification Marking System,SCHIP — State Children's Health Insurance Program (U.S.; often pronounced "ess-chip"),SciFi — Science Fiction,sCJD — Sporadic Creutzfeldt-Jakob disease,SCM — Surface Contamination Module,SCMODS — State, County, Municipal Offender Data System,SCN — Suprachiasmatic Nucleus,SCNT — Somatic Cell Nuclear Transfer
SCO Santa Cruz Operation (initials later used by SCO Group), Scotland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram), Shanghai Cooperation Organization,SCOTUS — Supreme Court of the United States,SCR — Seychelles rupee (ISO 4217 currency code),SCRAM — Safety Control Rod Axe Man
SCS Scan Correlated Shift,Soil Conservation Service
SCSI Small Computer System Interface (“scuzzy”), Strategic and Combat Studies Institute,SCT — Scattered Sky (METAR Code),SCTP — Stream Control Transmission Protocol,Scuba — Self Contained Underwater Breathing Apparatus,SCUF — Slow Continuous Ultrafiltration,SCUFN — Sub-Committee on Undersea Feature Names (of GEBCO),SD[edit],sd — Sindhi language (ISO 639-1 code)
SD Secure Digital (memory card format),Sheriff's department,Smoke/Decontamination, South Dakota (postal symbol),Sudan (ISO 3166 digram)
SDC Shaft Driven Compressor,U.S. Army Strategic Defense Command (1985-1992),SDG — Sudanese pound (ISO 4217 currency code),SDG — Sum Dum Goy-greasy spoon chinese restaurant,SDH — Synchronous Digital Hierarchy
SDHC Secure Digital High Capacity
SDXC Secure Digital eXtended Capacity
SE Seychelles (FIPS 10-4 country code), Societas Europaea (form of business organization in the EU),South-east, Sweden (ISO 3166 digram), Synthetic Environment,System Engineering,SEAD — Suppression of Enemy Air Defence,SEADI — Senior Executioner of Approved Driving Instructors,SEAFDEC — Southeast Asian Fisheries Development Center,SEAL — SEa-Air-Land,SEAT — Sociedad Española de Automóviles de Turismo (Spanish for "Spanish Touring Car Company"),SEATO — Southeast Asia Treaty Organization,SeaWiFS — Sea-Viewing Wide Field of View Sensor (satellite instrument)
SEC U.S. Securities and Exchange Commission, Security,Southeastern Conference
SECaaS Security-as-a-Service
SEM (i/a) Sensor Employment Manager,Switch to Email Mode, i.e. stop texting as it is more disruptive by making a sound or vibrating and email instead, for a given time
SEN Senegal (ISO 3166 trigram), Small Extension Node
SEP Somebody Else’s Problem,Spherical Error Probable,System Enhancement Package,System Engineering Plan,SEPTA — Southeastern Pennsylvania Rapid-Transit Authority,SERE — Survival, Evasion, Resistance and Escape,SESSPE — Submarine Escape and Surface Survival Personnel Equipment,SET — Staphylococcal EnteroToxin,SETI — Search for ExtraTerrestrial Intelligence,SETAC — Society for Environmental Toxicology and Chemistry
SEU Single Event Upset (solid state physics),Slightly Enriched Uranium,Special Evidence Unit,SF[edit]
SF Fleet Submarine (retired US Navy hull classification), San Francisco,Science fiction, South Africa (FIPS 10-4 country code), Speculative fiction,Special Forces
SFA Sales force automation,Saturated fatty acid,Scottish Football Association,Stephen F. Austin (State University),Sudan Football Association
SFE Supercritical fluid extraction,Sydney Futures Exchange,SFF — Standard File Format,sf&f — Science fiction & fantasy,SFM — Switch to Facebook Mode, i.e. to message someone on Facebook instead of texting as it is less disruptive in the sense of the phone not making sound or vibrating, for a period of time,SFOB — Special Forces Operations Base,SFOR — UN Stabilisation Force (in Bosnia and Herzegovina),SFU — Simon Fraser University (Canada),SG[edit],sg — Sango language (ISO 639-1 code),Sg — Seaborgium
SG Senegal (FIPS 10-4 country code),Singapore (ISO 3166 digram),Snow Grains (METAR Code), Study Group
SGC Server Gated Cryptography, Stargate Command,SGD — Singapore dollar (ISO 4217 currency code),SGML — Standard Generalized Markup Language,SGP — Singapore (ISO 3166 trigram)
SGS South Georgia and the South Sandwich Islands (ISO 3166 trigram), Svalbard Ground Station (Landsat),Société Générale de Surveillance,SH[edit],sh — Serbo-Croatian language (ISO 639-1 code)
SH Saint Helena (ISO 3166 digram), SONATRACH (Algerian petroleum company)
SHAC Stop Huntingdon Animal Cruelty,Student Health Action Coalition,SHAPE — Supreme Headquarters Allied Powers Europe,SHF — Super High Frequency,SHN — Saint Helena (ISO 3166 trigram)
SHO Showtime (see also sho.com)
SI Slovenia (ISO 3166 and FIPS 10-4 country code digram), Socialist International,Sports Illustrated,Système International (French, International System of Units),SIA — Singapore Airlines (ICAO code),SIA — Survivors of Incest Anonymous,SIAM — Society for Industrial and Applied Mathematics,SIC — Standard Industrial Classification,SICS — (a/i) Swedish Institute of Computer Science,SIDS — Sudden infant death syndrome,SIDU — select, insert, delete, update. See Create, read, update and delete,SIF — Selective Identification Feature,SIFF — Successor IFF
SIG Schweizerische Industrie Gesellschaft (German, "Swiss Industry Company"). See also SIG Sauer, a firearms manufacturer spun off from the aforementioned company in 2000., .signature (UNIX shell/Internet standard file name),(a/i) Special Interest Group,SIGCAT — Special Interest Group for CD-ROM Applications and Technology,SIGINT — Signals Intelligence,SIGMET — Significant Meteorological Information
SIIT Saskatchewan Indian Institute of Technologies (Canadian university),Sirindhorn International Institute of Technology (Thai university),Stateless IP/ICMP Translation algorithm,SIMAC — Semantic Interaction with Music Audio Contents,SIMLAS — Soldier Integrated Multipurpose Laser System,SIMM — Single In-line Memory Module,SIMNET — SIMulator NETwork, later SIMulation NETwork,SIMNET-D-SIMNET-Developmental,SIMP — Strongly Interacting Massive Particle
SIMPLE Satellite Interactive Multimedia Platform for Low-cost Earth stations, Savings Incentive Match Plan for Employees (as used in SIMPLE IRA), Standard Interface for Multiple Platform Link Evaluation (NATO STANAG 5602),sin — Sinhalese language (ISO 639-2 code),SIN — Social Insurance Number (Canada),SINCGARS — SINgle Channel Ground and Airborne Radio System
SIP Session Initiation Protocol,State Implementation Plan,System Improvement Program,Systematic Investment Plan,SIPP — Self-Invested Personal Pension
Siri Speech Interpretation and Recognition Interface (Apple iOS software)
SIRI Service Interface for Real Time Information
SISO Simulation Interoperability Standards Organization,Society of Independent Show Organizers,SIW — Simulation Interoperability Workshop,SIYSS — Stockholm International Youth Science Seminar,SJ[edit]
SJ Svalbard and Jan Mayen (ISO 3166 digram), Societas Iesu (Latin: The Society of Jesus, the Jesuit order), Statens Järnvägar (Swedish State Railways),SJA — Staff Judge Advocate (military law),SJC — Supreme Judicial Court of Massachusetts (note: the highest court in the state of Maine is also called the Supreme Judicial Court),SJM — Svalbard and Jan Mayen (ISO 3166 trigram),SK[edit],sk — Slovak language (ISO 639-1 code)
SK Saskatchewan (postal symbol),Slovakia (ISO 3166 digram),SKC — Clear Sky (METAR Code),SKK — Slovak koruna (ISO 4217 currency code),SKM — Sikkim (ISO 3166 trigram; obsolete 1975)
SKU
SL Sierra Leone (ISO 3166 and FIPS 10-4 country code digram), Start Line
SLA Service Level Agreement,Symbionese Liberation Army,SLAA — Sex and Love Addicts Anonymous,SLAC — Stanford Linear Accelerator Center,SLAN — sine loco, anno, nomine (Latin, “without place, year, or name”),SLAPP — Strategic lawsuit against public participation,SLB — Solomon Islands (ISO 3166 trigram),SLBM — Sea/Submarine-Launched Ballistic Missile,SLC — Scan Line Corrector,SLE — Sierra Leone (ISO 3166 trigram),SLI/SLi,(i/s) Scan-Line Interleave,Scalable Link Interface,SLIT — SubLingual ImmunoTherapy,slk — Slovak language (ISO 639-2 code),SLL — Sierra Leone leone (ISO 4217 currency code),SLO — Slovenia (IOC trigram, but not FIFA or ISO 3166)
SLOC Sea Lines Of Communication,Source Lines Of Code,SLORC — State Law and Order Restoration Council (of Burma)
SLP Sea Level Pressure, Super Long Play,slph — Standard litre per hour (air flow),slpm — Standard litre per minute (air flow),slps — Standard litre per second (air flow),SLR — Single-Lens Reflex (camera)
SLT Single Lens Translucent, Speech and language therapist, Solid Logic Technology (electronics),Swing Landing Trainer (paratroops),Secondary lymphoid tissue,slv — Slovenian language (ISO 639-2 code),SLV — El Salvador (ISO 3166 trigram),SM[edit],sm — Samoan language (ISO 639-1 code),Sm — Samarium
SM Sado-Masochism, San Marino (ISO 3166 and FIPS 10-4 country code digram), Soldier's Manual, Submarine Minelayer (US Navy hull classification),SMA — Scan Mirror Assembly,SMART — Subject Matter And Requirements Team,SMART — Self-Monitoring, Analysis and Reporting Technology,SMASS — Small Main-Belt Asteroid Spectroscopic Survey,SMCT — Soldier's Manual of Common Tasks,SMD — Surface Mount Device,SMDR — Station Message Detail Recording,sme — Northern Sami language (ISO 639-2 code)
SME Scan Mirror Electronics,Subject Matter Expert
SMG Sequential Motorsport Gearbox,SubMachine Gun,SMH — Shaking My Head,SMil — Sadomasochisterne i landet (Danish SM organisation),SMIL — Synchronized Multimedia Integration Language,smo — Samoan language (ISO 639-2 code),SMP — Standard Military Pattern,SM&R — Source, Maintenance, and Recoverability,SMR — San Marino (ISO 3166 trigram),SMS — many, including: Short message service; see entry,SMTP — Simple Mail Transfer Protocol,SMU — Southern Methodist University
SMX many, including: Server Macro Expansion, Solaris MINIX, Spatial multiplexing, Sulfamethoxazole; see entry
SMZ many, including: Silver Mt. Zion, Sulfamethazine, Sulfamethoxazole; see entry,SN[edit],sn — Shona language (ISO 639-1 code),Sn — Tin (Latin Stannum)
SN Senegal (ISO 3166 digram),Singapore (FIPS 10-4 country code),Snow (METAR Code),SuperNova,Screen Name,sna — Shona language (ISO 639-2 code),SNAFU — “Situation Normal — All Fouled/Fucked Up”,SNAP — Supernova/Acceleration Probe,SNCB — Société nationale des chemins de fer de Belgique (French for “Belgian Railways National Society”, NMBS in Dutch),SNCF — Société nationale des chemins de fer français (French for “French Railways National Society”),snd — Sindhi language (ISO 639-2 code),SND — Standard Nomenclature Database,SNE — Synthetic Natural Environment,SNES — Super Nintendo Entertainment System,SNÉTA — Syndicat national pour l'étude des transports aériens (French for “Aerial transport Study National Syndicate”, 1919-1923),SNG — Satellite News Gathering (television)
SNL Saturday Night Live (television), Società Navigazione del Lago di Lugano,SNM — Special Nuclear Material,SNMP — Simple Network Management Protocol,SNOBOL — StriNg Oriented symBOlic Language,SNP — Single-nucleotide polymorphism
SNR SuperNova Remnant,Signal-to-Noise Ratio,SNRI — Serotonin-Norepinephrine Reuptake Inhibitor,SNS — Spallation Neutron Source,SNU — Solar Neutrino Unit,SO[edit],so — Somali language (ISO 639-1 code)
SO Shared Object (Unix),Sheriff's Office,Significant other, Somalia (ISO 3166 and FIPS 10-4 country code digram)
SOA service-oriented architecture, Society of Actuaries, State of the art
SOAP Simple Object Access Protocol,Supplemental Offer and Acceptance Program (U.S. medical residency matching)
SOB Son Of a Bitch,Same Old Bullshit,SOC — Sector Operations Centre,SOCCSKSARGEN — South Cotabato, Cotabato, Sultan Kudarat, Sarangani, General Santos City (a region in the Philippines; pronounced “sock-sar-gen”),SOCOM — (U.S.) Special Operations Command
SoCon Southern Conference (U.S. college sports)
SOD (i/a) School Of Dentistry,Statement Of Difference[s],Statement Of Direction,Statement Of Documentation,Statement Of Duty/Duties
SOE Secret Of Evermore,Special Operations Executive (WWII British organization),State Of Emissions (EW)
SOF (a/i) Special Operations Force,Status of Forces,SOFIA — Stratospheric Observatory For Infrared Astronomy
SOGAT Society of Graphical and Allied Trades,Former British printing union,SOHC — Single-OverHead-Cam engine,SOHO — Solar and Heliospheric Observatory,SOI — Signal Operating Instruction,SOL — Shit Out of Luck,SOLIS — Synoptic Optical Long-term Investigations of the Sun,som — Somali language (ISO 639-2 code)
SOM Simulation Object Model, Somalia (ISO 3166 trigram),Sonar — SOund Navigation And Ranging
SOP Standing/Standard Operating Procedure,State of Play
SOR State Of iness,Statement Of Requirements
SOS Somali shilling (ISO 4217 currency code),Save Our Souls,SOSTAR — Stand-Off Surveillance and Target Acquisition Radar,sot — Sotho language (ISO 639-2 code),SOUTHAG — Southern Army Group,SOUTHCOM — (U.S.) Southern Command,SOV — Single Occupant Vehicle,SOW — Statement Of Work,SOWHAT — RESNA Subcommittee on Wheelchairs and Transportation,SOX — Sarbanes-Oxley Act,SP[edit]
Sp Special,Spring tide (nautical charts), sine prole (Latin, “without offspring”)
SP Security Police,Self-Propelled,Shore Patrol, Spain (FIPS 10-4 country code), Start Point,Strong Point,spa — Spanish language (ISO 639-2 code),SPAAG — Self-Propelled Anti-Aircraft Gun,SPACECOM — (U.S.) Space Command,Spaser — Surface plasmon amplification by stimulated emission of radiation,SPC — Secretariat of the Pacific Community,SPCO — Single-Pole Change Over
SPD Shimano Pedaling Dynamics,Sozialdemokratische Partei Deutschlands (Social Democratic Party of Germany),SPDT — Single-Pole Double-Throw,SPEAC — Stop Primate Experiments at Cambridge (later became SPEAK),SPECTRE — SPecial Executive for Counter-intelligence, Terrorism, Revenge and Extortion,S.P.E.A.R.-Spontaneous Protection Enabling Accelerated Response,SPEED — Subsistence Preparation by Electronic Energy Diffusion (early military microwave oven),SPIE — originally the Society for Photo-Optical Instrumentation Engineers (“SPIE — The International Society for Optical Engineering” 1981-2007, “SPIE” since 2007)
SPL Scottish Premier League,Superior Parietal Lobule,Sound Pressure Level,SPM — Saint Pierre and Miquelon (ISO 3166 trigram),SPOD — (a/i) Sea Port of Debarkation,SPOE — (a/i) Sea Port of Embarkation,SPOT — Satellite pour l'observation de la Terre (French, “Satellite for Earth Observation”),SPQR — Senatus Populusque Romanus (Latin “The Senate and the People of Rome”),sps — sine prole superstite (Latin, “without surviving issue”),SPS — Standard Positioning Service (GPS),SPST — Single-Pole Single-Throw,SQ[edit],sq — Albanian language (ISO 639-1 code),SQ — Sound Quality,SQ — Standard Quality,sqi — Albanian language (ISO 639-2 code),SQL — (i/a) Structured Query Language (“seek-well”),SQUID — Superconducting QUantum Interference Device,SQOR — Succinate:Quinone OxidoReductase, enzyme superfamily including quinone-linked succinate dehydrogenase and fumarate reductase,SR[edit],sr — Serbian language (ISO 639-1 code),Sr — Strontium
SR Sound Reinforcement,Supply Route, Suriname (ISO 3166 digram), Sveriges Radio (Swedish Radio Ltd),SR — Sustained release of a drug
SRAM Scott (King), Ray (Day), SAM (Patterson) — founders of bicycle component manufacturer SRAM Corporation, Static Random Access Memory (“ess-ram”),SR-ATGW — Short-Range Anti-Tank Guided Weapon,SRB — Solid Rocket Booster,SRBM — Short-Range Ballistic Missile (cf. IRBM, ICBM),SRC — Scheduled Removal Component,srd — Sardinian language (ISO 639-2 code)
SRD Science Requirements Document, Surinam dollar (ISO 4217 currency code),SREL — Savannah River Ecology Laboratory
SRG SACEUR Rover Group,Special Republican Guard,SRGW — Short-Range Guided Weapon
SRL Savannah River Laboratory,Single Rocket Launcher,Survival Research Labs,SRM — Specified Risk Material,srp — Serbian language (ISO 639-2 code),SRS — Savannah River Site,SRSP — Science and Religion in Schools Project,SRTP — [Secure Real-time Transport Protocol],SS[edit],ss — Swati language (ISO 639-1 code)
SS Sand Storm (METAR Code), Schutzstaffel (German, roughly "Protection Squadron"; Nazi elite Praetorian guard), U.S. Secret Service,Spanish Ship,Stainless steel,Stockholm Skins, Submarine (US Navy hull classification), Super Sport,Surface-to-Surface (missile)
SSA Cargo Submarine (US Navy hull classification), Social Security Administration (U.S.),Statistics South Africa,SSB — Single-sideband modulation,SSB — Sacramento Sustainable Business,SSBN — Nuclear-Powered Ballistic Missile Submarine (US Navy hull classification)
SSC Safe, Sane, Consensual (SM phrase),Secondary Somatosensory Cortex,Smaller-Scale Contingency,U.S. Army Soldiers System Center (Natick, Massachusetts),Superconducting Super Collider,SSCCATAGAPP — Singles, Seniors, Childless Couples, And Teens And Gays Against Parasitic Parents (fictional organization from The Simpsons)
SSD Solid-state drive, South Sudan (ISO 3166 trigram),SSDC — U.S. Space and Strategic Defense Command
SSDD Same Shit, Different Day,Single-Sided Double-Density (floppy disk)
SSE South South-East, Streaming SIMD Extensions,SSG — Guided Missile Submarine (retired US Navy hull classification),SSGN — Nuclear-Powered Guided Missile Submarine (US Navy hull classification),SSH — Saffir-Simpson Hurricane scale,SSK — Hunter-Killer Submarine (retired US Navy hull classification),SSKP — Single-Shot Kill Probability,SSL — Secure Sockets Layer,SSM — Surface-to-Surface (Guided) Missile
SSN Nuclear-Powered Attack Submarine (US Navy hull classification), SIM Serial Number,Social Security Number (U.S.),Socialist Solidarity Network,Subsystem number (SCCP, SS7),SSNW — Same Shit, New Wrapping,SSO — Submarine Oiler (retired US Navy hull classification),SSP — Submarine Transport (retired US Navy hull classification)
SSR Radar Picket Submarine (retired US Navy hull classification), Solid State Recorder
SSRI Selective Serotonin Reuptake Inhibitor,Social Systems Research Institute
SSRN Social Science Research Network, Nuclear-Powered Radar Picket Submarine (retired US Navy hull classification)
SSS Siding Spring Survey,Side Side Side (an acronym for remembering congruent triangles), Sigue Sigue Sputnik (band),S/SSM — Surface-to-Subsurface Missile
SST SuperSonic Transport, Training Submarine (US Navy hull classification),Saturated Suction Temperature (refrigeration cycles),SSTO — Single-Stage To Orbit,SSV — Soft-Skinned Vehicle (i.e., unarmoured),ssw — Swati language (ISO 639-2 code),SSW — South South-West,ST[edit],st — Sotho language (ISO 639-1 code)
ST Saint Lucia (FIPS 10-4 country code),São Tomé and Príncipe (ISO 3166 digram)
STA Scheduled Time of Arrival,Surveillance and Target Acquisition,STAG — (U.S.) Strategy and Tactics Group,STAGE — Scenario Toolkit And Generation Environment,STANAG — (NATO) Standardisation Agreement
STAR Scientific and Technical Aerospace Reports (NASA),Simulation of Tactical Alternative Responses,Special Threat Analysis and Recognition
STAT Signal Transducers and Activators of Transcription (cell biology),Special Tertiary Admissions Test (Australia)
STB Surface Transportation Board[2]
STD São Tomé and Príncipe dobra (ISO 4217 currency code), Sexually Transmitted Disease,STDM — Statistical Time Division Multiplexing
STEM Scanning transmission electron microscopy,Science, technology, engineering, and mathematics, Spatiaotemporal Epidemiological Modeler (IBM-developed software),STENTOR — Satellite de télécommunications pour expérimenter de nouvelles technologies en orbite (French, “Orbital New Technology Experimental Telecommunications Satellite”)
STFU Southern Tenant Farmers Union,Stuff You[citation needed],"Shut the fuck up!"',STH — Sonic The Hedgehog
STI Sexually Transmitted Infection,Subaru Tecnica International,STK — Satellite Tool Kit,STM — Short Term Memory,STOL — Short Take-Off and Landing,STOVL — Short Take-Off and Vertical Landing
STP São Tomé and Príncipe (ISO 3166 trigram), Standard Temperature and Pressure,STR — Short Tandem Repeat (DNA analysis),STRATCOM — United States Strategic Command
STRICOM U.S. Army Simulation, Training & Instrumentation Command (1992-),Strike Command (1962-1971),STRIVE — Synthetic Tactical Real-time Interactive Virtual Environment,STSM — Senior Technical Staff Member,Stuka — Sturzkampfflugzeug (German WWII dive bomber),SU[edit],su — Sundanese language (ISO 639-1 code)
SU Soviet Union (ISO 3166 digram; obsolete 1992),Sudan (FIPS 10-4 country code),SUB — Student Union Building,SuD — Subject under Discussion,SUDC — Swedish United Dawah Center, a salafist Islamic organisation in Sweden
SUI Sonic user interface, Switzerland (IOC and FIFA trigram, but not ISO 3166),SUK — Start Up Kit,sun — Sundanese language (ISO 639-2 code),SUN — ,Soviet Union (ISO 3166 trigram; obsolete 1992),Stanford University Network that led to Sun Microsystems,SUNY — State University of New York (usually pronounced “sue-knee”),SUR — Suriname (ISO 3166 trigram),SURTASS — Surveillance Towed Array Sensor System,SUSAT — Sight Unit Small Arms, Trilux,SUV — Sport Utility Vehicle,SV[edit],sv — Swedish language (ISO 639-1 code)
SV El Salvador (ISO 3166 digram), Sportverein (German for “Sport Association”, as in Hamburger SV and SV Werder Bremen),SVC — Secondary Visual Cortex,SvD — Svenska Dagbladet (Swedish newspaper)
SVD Singular Value Decomposition,Snaiperskaya Vintovka Dragunova (Снайперская винтовка Драгунова, Russian for “Dragunov Sniper Rifle”),SVG — Scalable Vector Graphics,SVK — Slovakia (ISO 3166 trigram)
SVM Stroboscopic effect Visibility Measure, Support Vector Machine (artificial intelligence),SVN — Slovenia (ISO 3166 and FIFA trigram),SVO — subject-verb-object,SVR — Sluzhba Vneshney Razvedki (Служба Внешней Разведки, Russian for "Foreign Intelligence Service"),SW[edit],sw — Swahili language (ISO 639-1 code)
SW South-West ordinal direction,Sweden (FIPS 10-4 country code), Shortwave,swa — Swahili language (ISO 639-2 code)
SWA (i/a) Secure Web Access,South-West Asia,SWAC — Southwestern Athletic Conference,SWALK — Sealed With A Loving Kiss,SWAN — System for Wearable Audio Navigation,SWAP — Surface Waters Acidification Programme,SWAPO — South-West Africa People's Organisation,SWAT — Special Weapons And Tactics,swe — Swedish language (ISO 639-2 code),SWE — Sweden (ISO 3166 trigram)
SWF Shockwave Flash file (“swiff”),Single White Female
SWG Surface Warfare Group,Symbology Working Group,SWHR — Society for Women's Health Research,SWIG — Simplified Wrapper and Interface Generator,SWIR — (a/i) Short Wave InfraRed (“ss-why-are” or “swhirr”)
SWLABR She Was Like A Bearded Rainbow,Cream song (Bruce, Clapton and Baker),SWORD — Subjective WORkload Dominance,SWORDS — Special Weapons Observation Reconnaissance Detection System,SWOT — Strengths, Weaknesses, Opportunities, Threats (mnemonic)
SWP Special Working Party (“swipp”),Systematic Westing Plan (a plan of periodic westing of shares or mutual funds worth a fixed amount of money),Skill with prize (UK pub quiz machines — quality titles include: Pub Quiz, Quiz City, Frog in a Liquidizer, Who Wants To Win a Tenner?),SWT — Sea Water Tank,SWV — Sisters With Voices (American female R&B vocal group),SWZ — Swaziland (ISO 3166 trigram),SX[edit],SX — Sonic X
SXM Scanning X-ray Microscope, Sint Maarten (ISO 3166 trigram), Stream X-Machine,SY[edit],SY — Syria (ISO 3166 and FIPS 10-4 country code digram),SYC — Seychelles (ISO 3166 trigram),SYLK — Microsoft 'Symbolic Link' data file format,SYP — Syrian pound (ISO 4217 currency code),SYR — Syria (ISO 3166 trigram),Syriza — Synaspismós Rizospastikís Aristerás (Greek Συνασπισμός Ριζοσπαστικής Αριστεράς,"Coalition of the Radical Left"),SysML — System Modeling Language,Sysop — System Operator,SZ[edit]
SZ Swaziland (ISO 3166 digram),Switzerland (FIPS 10-4 country code),SZL — Swaziland lilangeni (ISO 4217 currency code),References[edit],^ Society of Automotive Engineers,^ Replaced Interstate Commerce Commission on January 1st, 1996,vteList of acronyms,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,Retrieved from "https://en.wikipedia.org/w/index.php?title=List_of_acronyms:_S&oldid=884129123",Categories: Lists of acronymsHidden categories: All articles with unsourced statementss with unsourced statements from December 2015,Navigation menu,Personal tools,Not logged inContributionsCreate accountLog in,Namespaces,,,,View history,
T Tera-Tesla-Tritium
ta Tamil language (ISO 639-1 code)
Ta Tantalum
TA Target Acquisition-Teaching Assistant-Tera-ampere-Territorial Army (UK)-Tristan da Cunha (ISO 3166 digram)
TAA Transparency Anti-Aliasing-Trans Australia Airlines
TAACOM U.S. Theater Army Area Command
TAADCOORD Theatre Army Air Defence Co-ordinator
TAAR Trace Amine-Associated Receptor
TAC U.S. Tactical Air Command (1946-1992)
TACAMO Take Charge and Move Out (U.S. military)
TACAN Tactical Air Navigation
TACC Tactical Air Control Centre-(USAF) Tanker Airlift Control Center
TACCO Tactical Coordinator
TACCSF U.S. Theater Aerospace Command & Control Simulation Facility
TACDAR Tactical Detection And Reporting
TACP Tactical Air Control Party-Technology Applications Certification Program
TACSOP Tactical SOP (Standing Operating Procedure)
TADIL Tactical Digital Information Link
TADL Tactical Air Data Link ("taddle")
TADSS Training Aids, Devices, Simulators, and Simulations
TAF Trading Activity Fee assessed by FINRA to recover the costs of supervising and regulating firms.
tah Tahitian language (ISO 639-2 code)
TAI Target[ed] Area of Interest
TAJ Tom and Jerry
TAJT Tom and Jerry Tales
TALES Technical Advice and Lexicon for Enabling Simulation
tam Tamil language (ISO 639-2 code)
TAN Tanzania (IOC and FIFA trigram, but not ISO 3166)
TANJ There Ain't No Justice (used as expletive in the Ringworld novels)
TANP Terrain-Aware Network Planner
TANSTAAFL There Ain't No Such Thing As A Free Lunch (coined by author Robert A. Heinlein in his The Moon Is a Harsh Mistress)
TAPPS Texas Association of Private and Parochial Schools
TARDIS Time And Relative Dimension In Space (from Doctor Who)
TARP Transparency Accountability Rights for Parents (coined by Karen Plumridge, founder of Black Ribbon Gold Heart)
TAROT Télescope à action rapide pour les objets transitoires (French, "Transient Object Rapid Action Telescope")
TAS Tasmania (postal symbol)
TASER Thomas A. Swift's Electric Rifle
TASM Tactical Air-to-Surface Missile
tat Tatar language (ISO 639-2 code)
TAT Tourism Authority of Thailand
TATP TriAcetone TriPeroxide
TATT Tired All The Time (medical diagnosis in-joke)
Tb Terbium
TB Tuberculosis
TBA to be announced
TBBPA TetraBromoBisPhenol-A
TBC to be confirmed, to be continued
TBD "to be documented", "to be determined", or "to be decided"
TBD Torpedo Boat Destroyer
TBF To be fair
TBGRI Tropical Botanic Garden and Research Institute, India
TBH To Be Honest
TBL Turkish Basketball League
TBM Tactical Ballistic Missile-Theatre Ballistic Missile
TBS Turner Broadcasting System
TBT Tributyltin
Tc Technetium
TC Teracoulomb-Turks and Caicos (ISO 3166 digram)-United Arab Emirates (FIPS 10-4 country code; from Trucial Coast States)
TCA Transformational Communications Architecture-Turks and Caicos (ISO 3166 trigram)
TCAS Traffic Collision Avoidance System
TCAA Top Counter-Assault Agents
TCCCS (i/a) Tactical Command, Control and Communication System ("ticks")
TCD Chad (ISO 3166 trigram)
TCG Trusted Computing Group-Türkiye Cumhuriyeti Gemisi
TCHD Truck Cargo Heavy Duty
TCL Tool Command Language
TCM Turner Classic Movies
TCP Traffic Control Point-Transmission Control Protocol-Trichlorophenol
TCU Texas Christian University
TCWMS Tele-Center Workforce Management System
TCW Tasty Coma Wife
TCC Tarrant County College
Tc Technetium
TC Teracoulomb-Turks and Caicos (ISO 3166 digram)-United Arab Emirates (FIPS 10-4 country code; from Trucial Coast States)
TCA Transformational Communications Architecture-Turks and Caicos (ISO 3166 trigram)
TCAS Traffic Collision Avoidance System
TCAA Top Counter-Assault Agents
TCCCS (i/a) Tactical Command, Control and Communication System ("ticks")
TCD Chad (ISO 3166 trigram)
TCG Trusted Computing Group-Türkiye Cumhuriyeti Gemisi
TCHD Truck Cargo Heavy Duty
TCL Tool Command Language
TCM Turner Classic Movies
TCP Traffic Control Point-Transmission Control Protocol-Trichlorophenol
TCU Texas Christian University
TCWMS Tele-Center Workforce Management System
TCW Tasty Coma Wife
te Telugu language (ISO 639-1 code)
Te Tellurium
TE Tactical Exploitation-Testosterone to Epitestosterone ratio-Tight end (American football; position generally not used in modern Canadian football)
TEAL Tasman Empire Airways Limited
Team Together everyone achieves more
TEAMS The East African Marine System (fiber optic cable)
TED Technology Entertainment Design prize
TEETH Tried Everything Else, Try Homeopathy (medical diagnosis in-joke)
tel Telugu language (ISO 639-2 code)
TEL (a/i) Transporter, Erector and Launcher
TELAR Transporter, Erector, Launcher And Radar
TEMO Training, Exercise, and Military Operations
TENCAP Tactical Exploitation of National Capabilities
TERS Tactical Event Reporting System
TES Tactical Event System
TEST Thesaurus of Engineering and Scientific Terms
TEU Twenty-foot equivalent unit (cargo capacity)
TeVeS Tensor Vector Scalar theory
TF
TFMPP Trifluorophenylmethylpiperazine
TFR Total Fertility Rate
TFT Thin-Film Transistor
TFTP
tg Tajik language (ISO 639-1 code)
Tg Teragram
TG Togo (ISO 3166 digram)
TGA Tonga (IOC and FIFA trigram, but not ISO 3166)
TGB Tres grande bibliothèque (French, "Very Large Library"), a sarcastic nickname for the Bibliothèque nationale de France
TGIF Thank God It's Friday, Toes Go In First
tgk Tajik language (ISO 639-2 code)
tgl Tagalog language (ISO 639-2 code)
TGO Togo (ISO 3166 trigram)
TGT Target (also the ticker symbol for Target Corporation), Ticket Granting Ticket (computer security), Tyrese, Ginuwine, Tank-see TGT (group) for their collaboration
TGV Tanjong Golden Village (Malaysian cinema chain), Tanora malaGasy Vonona (Malagasy, "Young Malagasies Determined"-political party), Test Generation with Verification,Train à grande vitesse (French for "High-Speed Train"),TH[edit]
th Thai language (ISO 639-1 code)
Th Thorium
TH Terahenry-Thailand (ISO 3166 and FIPS 10-4 country code digram)
tha Thai language (ISO 639-2 code)
THA Thailand (ISO 3166 trigram)
THAAD (a/i) Terminal High Altitude Area Defence
THB Thai baht (ISO 4217 currency code)
THEGENTRY The High-End Group of Earth's New Technologies Research Yield
THEL Tactical High Energy Laser ACTD
THG Tetrahydrogestrinone
ThG Graduate of Theology
THSU Texas Health and Science University
ti Tigrinya language (ISO 639-1 code)
Ti Tebi-Titanium
TI Tajikistan (FIPS 10-4 country code)-Thermal Imaging-Threat Identification-Training Instructor-Texas Instruments
TIA Total Information Awareness initiative
TIA Transient Ischemic Attack
TIALD Thermal Imaging and Airborne Laser Designation
TIBS Tactical Information Broadcast System
TIC Troops In Contact
TID Target Identification-ter in die (Latin, "three times daily")
TIGERS Topologically Integrated Geographic Encoding and Referencing System
TIM Technical Information Memorandum-Technical Interchange Meeting-Toxic Industrial Material-Telecom Italia Mobile
TIMS Tactical Internet Management System-The Institute of Management Sciences-The International Molinological Society-Thermal Infrared Multispectral Scanner-Thermal Ionization Mass Spectrometry-Travel Information Management Services-Tuberculosis Information Management System
TINC There Is No Cabal
TINY That Is, Not You (internet slang)
TIP Thermal Identification Panel
tir Tigrinya language (ISO 639-2 code)
tits Toes in the Sand
TJ Tajikistan (ISO 3166 digram)-Terajoule
TJD Truncated Julian Day
TJK Tajikistan (ISO 3166 trigram)
TJS Tajik somoni (ISO 4217 currency code)
tk Turkmen language (ISO 639-1 code)
TK Terakelvin-Tokelau (ISO 3166 digram)
TKBL Türkiye 1. Kadınlar Basketbol Ligi, the Turkish-language name of the Turkish Women's Basketball League
TKL Tokelau (ISO 3166 trigram)
TKM Turkmenistan (ISO 3166 trigram)
tl Tagalog language (ISO 639-1 code)
Tl Thallium
TLPM T1 Line Performance Monitor
TL Team Leader, Teralitre,Timor-Leste (ISO 3166 digram), ThermoLuminescence,TL;DR-Too long; didn't read
TLATOJL The Life and Times of Juniper Lee
TLA Three-Letter Abbreviation/Acronym,(ii) 'Three-Letter Agency' (i.e. CIA, FBI, NSA, etc.), Temporal light artefacts
TLAM Tomahawk Land Attack Missile
TLAR That Looks About Right (chat shorthand),Transporter-Launcher And Radar
TLC Tender Loving Care,The Learning Channel (now known strictly by the initials),Thin-layer chromatography,T-Boz, Lefteye, Chilli,Tables, Ladders, and Chairs (type of professional wrestling match)
TLD Thermoluminescent Dosimeter,Top-Level Domain
TLE Temporal light effects
TLI Temporal light interference
TLM Traditional Latin Mass,Tridentine Latin Mass,Transaction Lifecycle Management, Temporal light modulation
TLS Timor-Leste (ISO 3166 trigram), Times Literary Supplement,TM[edit]
Tm Terameter
Thulium
TM Technical Manual,Theater Missile,Thematic Mapper, trademark (often written in small superscript type: TM or ™), Turing machine, Turkmenistan (ISO 3166 digram) Tympanic Membrane
TMA Terminal Maneuvering Area (restricted flying zone),Texas Medical Association,Tristeza y muerte de agave (Spanish, "wilting and death of agave")-a disease affecting the blue agave, from which the popular spirit tequila is produced
TMAP (a/i) Texas Medication Algorithm Project
TMC The Movie Channel
TMD Theater Missile Defense
TMDK The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
TMI Too Much Information
TMJ TemporoMandibular Joint (syndrome)
TMM Turkmen manat (ISO 4217 currency code)
TMNT Teenage Mutant Ninja Turtles
TMO Table Mountain Observatory,Television match official (rugby union)
TMP East Timor (ISO 3166 trigram; obsolete 2002), Temporary
TMPG Transparent Multiplatform Gateway
TMR Twin Main Rotors (helicopter type)
TMS Transcranial Magnetic Stimulation
TMT Thirty Meter Telescope
TMTOWTDI There's Than One Way To Do It (from Perl)
TMZ Thirty-Mile Zone, an area in and around Los Angeles considered "local" under entertainment industry union work rules
tn Tswana language (ISO 639-1 code)
TN Tennessee (postal symbol),Teranewton,Tonga (FIPS 10-4 country code),Tunisia (ISO 3166 digram)
TNA Total Nonstop Action Wrestling, a former name of the professional wrestling promotion now known as Impact Wrestling
TND Tunisian dinar (ISO 4217 currency code)
TNO Trans-Neptunian Object
TNT Thomas Nationwide Transport, an Australian company that was one of the predecessors to the former TNT N.V. and the current TNT Express, TriNitroToluene,(a/i) Turner Network Television,TO[edit]
to Tongan language (ISO 639-1 code)
TO Togo (FIPS 10-4 country code),Tonga (ISO 3166 digram)
TOA Table Of Authorities,Total Obligation Authority (accounting)
TOAD Temporary, Obsolete, Abandoned, or Derelict site (urbanism),Towed Optical Assessment Device
TOBS Time of OBServation
TOC (a/i) Table Of Contents,Tactical Operations Centre, Temporo-Occipital transition Cortex,Top of Concrete,To-do-To-do-List
TOG Togo (IOC and FIFA trigram, but not ISO 3166)
TOGS Thermal Observation Gunnery Sight
TOMS Total Ozone Mapping Spectrometer (satellite instrument)
ton Tongan language (ISO 639-2 code)
TON Tonga (ISO 3166 trigram)
TOP Tongan pa'anga (ISO 4217 currency code)
TOS Tape Operating System,Terms of service,The Original Series, used to distinguish the first Star Trek TV series from other parts of the media franchise,Tramiel Operating System
TOT Time On Target
TOW Tube-launched, Optically tracked, Wire-guided (anti-tank missile)
TP East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code), Training Practice,Trident Ploughshares
TPE Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
TPI The point is
TPO Thrombopoietin
TPS The Pennington School
TPTB The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
TQ Top Qualifier (similar to Pole Position in car racing)
tr Turkish language (ISO 639-1 code)
TR Turkey (ISO 3166 digram)
TRA Technology iness Assessment
TRAC (U.S. Army) TRADOC Analysis Center
TRACON Terminal Radar Approach Control
TRADOC (U.S. Army) Training and Doctrine Command
TRAIN Tourist Railway Association, Inc.
TRANSCOM U.S. Transportation Command
TRAP Tactical Receive equipment and related Applications
TRASANA TRADOC Systems Analysis Agency
TRD Towed Radar Decoy
TRIGAT Third Generation Antitank (missile)
TRL Technology readiness level
Trp Troop
TRP Target Reference Point-Time of Reporting
TRU Transuranic
TRUEX Training in Urban Environment Exercise
TRW Thompson Ramo Wooldridge Inc.
TRY Turkish lira (ISO 4217 currency code)
ts Tsonga language (ISO 639-1 code)
Ts Terasecond
TS Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code), TinySex,Transsexual, "Tough Sh*t"
TSA Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
TSCA Toxic Substances Control Act ("tosca")
TSEC Transmission Security Encryption Code
TSL Transportation Security Laboratory
tsn Tswana language (ISO 639-2 code)
TSN The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
tso Tsonga language (ISO 639-2 code)
TSO The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office, Trans-Siberian Orchestra (band)
TSOP Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
TSR many, including Terminate and Stay Resident; see entry
TSSIA The Subject Says It All
tt Tatar language (ISO 639-1 code)
TT Teratesla, Terrestrial Time,Tourist Trophy (Motorcycle sport), Trinidad and Tobago (ISO 3166 digram)
TTBAO Things To Be Aware Of
TTCT Torrance Tests of Creative Thinking
TTD Trinidad and Tobago dollar (ISO 4217 currency code)
TTO Trinidad and Tobago (ISO 3166 trigram)
TTFN Ta Ta For Now
TTL Tax, Title, License, Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
TTP Tactics, Techniques, and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
TTTEAF Thomas the Tank Engine and Friends
TTY TeleTYpewriter (Printer)
TTYL To You Later (Internet slang)
TTZ Tetrazolium
TU Technische Universität (German for "Technical University")-Thammasat University (Thailand)-Turkey (FIPS 10-4 country code)
TUC Trades Union Congress
TUG TeX Users Group
TUI (a/i) Text-based user interface (cf. CLI), among other uses
tuk Turkmen language (ISO 639-2 code)
TUN Tunisia (ISO 3166 trigram)
TUNS Technical University of Nova Scotia
Tur Turkish language (ISO 639-2 code)
TUR Turkey (ISO 3166 trigram)
TUSK Tank Urban Survival Kit
TUV Tuvalu (ISO 3166 trigram)
Tv Time value, a designation seen on some camera dials for shutter priority mode
TV Television, Teravolt, Transvestite, Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
TVA Tennessee Valley Authority
TVG (p/i) Television Games (Network), Tick, Very Good, Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
TVR TreVor (Wilkinson) Racing
TVS Tornado vortex signature
TWA Trans World Airlines
tw Twi language (ISO 639-1 code)
TW Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram)-
TWAIN Technology Without An Interesting Name
TWD Taiwan dollar (ISO 4217 currency code)
TWE Trans World Entertainment
twi Twi language (ISO 639-2 code)
TWI The Welding Institute
TWN Republic of China (Taiwan) (ISO 3166 trigram)
TWP Technical Working Paper
Twp township
TWS Thermal Weapon Sight-Track While Scan
TWT traveling wave tube
TWX telex
TWIP Take What Insurance Pays-When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference
TX Texas (postal symbol)-Transmit-Turkmenistan (FIPS 10-4 country code)
TXV Thermostatic Expansion Valve
ty Tahitian language (ISO 639-1 code)
TYT Take Your Time-Internet chat abbreviation
TZ Tanzania (ISO 3166 and FIPS 10-4 country code digram)
TZA Tanzania (ISO 3166 trigram)
TZC Tetrazolium chloride
TZS Tanzanian shilling (ISO 4217 currency code)
U Uranium
UA Ukraine (ISO 3166 digram) Unit of Action
UAAP University Athletic Association of the Philippines
UAB University of Alabama at Birmingham
UAE (i/s) United Arab Emirates (also IOC and FIFA trigram, but not ISO 3166)
UAH Ukrainian hryvnia (ISO 4217 currency code), University of Alabama in Huntsville
UAR Uniformly At Random (probability),Unión Argentina de Rugby (Spanish for "Argentine Rugby Union"),United Arab Republic
UAV Unmanned Aerial Vehicle
UBC * United Baptist Church,* University of British Columbia
UBIGEO Ubicación Geografica (Spanish for Geographical Location)
UBA Unbundled Bitstream Access
UBS Union Bank of Switzerland
UCBSA United Cricket Board of South Africa
UCAV (a/i) Unmanned Combat Air Vehicle
UCF University of Central Florida
UCI Union Cycliste Internationale (French, "International Cycling Union")-University of California, Irvine
UCLA University of California, Los Angeles
UCLES University of Cambridge Local Examinations Syndicate
UCR University of Costa Rica-University of California, Riverside
UCS Union of Concerned Scientists
UCSB University of California, Santa Barbara
UCSD University of California, San Diego
UDAS Uppsala-DLR Asteroid Survey
UDDI Universal Description, Discovery and Integration
UDP User Datagram Protocol
UDT Underwater Demolition Team
UDTS Uppsala-DLR Trojan Survey
UE Unit of Employment
UEFA Union of European Football Associations
UEFI (i/a) Unified Extensible Firmware Interface
UESAC Uppsala-ESO Survey of Asteroids and Comets
UFC Ultimate Fighting Championship
UFO Unidentified flying object,United Farmers of Ontario,UG[edit]
ug Uyghur language (ISO 639-1 code)
UG Uganda (ISO 3166 and FIPS 10-4 country code digram)
UGA Uganda (ISO 3166 trigram)
UGV Unmanned Ground Vehicle
UGX Ugandan shilling (ISO 4217 currency code)
UHF Ultra High Frequency
UHMW Ultra-high-molecular-weight polyethylene
UHRB Ultra-High Resolution Building (simulation)
UHNWIs Ultra High Net Worth Individuals Investopedia and Wikipedia
UIC University of Illinois at Chicago
UID User ID
uig Uyghur language (ISO 639-2 code)
UIL University Interscholastic League (governing body for most interscholastic activities, notably sports, in Texas public high schools)
UIUC University of Illinois at Urbana-Champaign
UJTL Universal Joint Task List
UJT Unijunction transistor
uk Ukrainian language (ISO 639-1 code)
UK United Kingdom (also FIPS 10-4 country code),University of Kentucky
UKDA United Kingdom Data Archive [1]
UKIP UK Independence Party
ukr Ukrainian language (ISO 639-2 code)
UKR Ukraine (ISO 3166 trigram)
UL Underwriters Laboratories
ULEB Union des ligues européens de basket-ball, French for "Union of European Basketball Leagues"
ULF Ultra Low Frequency
ULOF unprotected loss of flow (nuclear accident)
ULOHS unprotected loss of heat sink (nuclear accident)
UTOP unprotected transient overpower (nuclear accident)
UM United States Minor Outlying Islands (postal symbol; ISO 3166 digram)
UMBC University of Maryland, Baltimore County
UMC United Microelectronics Corporation-University of Missouri-Columbia
UMCP Unit Maintenance Collection Point
UMES University of Maryland Eastern Shore
UMI United States Minor Outlying Islands
UMIST University of Manchester Institute of Science and Technology
UMK Uniwersytet Mikołaja Kopernika (Polish "Nicolaus Copernicus University")
UML
UMTS Universal Mobile Telecommunications System
UN United Nations
UNABOM University and airline bomber (FBI case name)
UNAIDS (i/a) Joint United Nations Programme on HIV/AIDS
UNaM (p/a) Universidad Nacional de Misiones (Spanish, "National University of Misiones")
UNAM Universidad Nacional Autónoma de México (Spanish, "National Autonomous University of Mexico")
UNAMSIL United Nations Mission in Sierra Leone
UNCF United Negro College Fund
UNCLOS United Nations Convention on the Law of the Sea
UNCSGN United Nations Conference on the Standardization of Geographical Names
UNCTAD United Nations Conference on Trade and Development
UNDCP United Nations Drug Control Programme
UNDE (i/a) Union of National Defence Employees (Canada)
UNDP United Nations Development Programme
UNEP United Nations Environment Programme
UNESCO United Nations Educational, Scientific and Cultural Organization
UNFCCC United Nations Framework Convention on Climate Change
UNFICYP United Nations Peacekeeping Force in Cyprus
UNGEGN United Nations Group of Experts on Geographical Names
UNHCR United Nations High Commissioner for Refugees
UNICEF United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
UNICRI United Nations Interregional Crime and Justice Research Institute
UNIDO United Nations Industrial Development Organization
UNIFEM United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
UNIS University of Surrey
UNLV University of Nevada, Las Vegas
UNMIK United Nations Interim Administration Mission in Kosovo
UNMOVIC United Nations Monitoring, Verification and Inspection Commission
UNOSOM United Nations Operations in Somalia
UNPROFOR United Nations Protection Force (in former Yugoslavia)
UNRISD United Nations Research Institute for Social Development
UNSM Union of Nova Scotia Municipalities
UNTAC United Nations Transitional Authority in Cambodia
UNTAET (i/a) United Nations Transitional Administration in East Timor
UNU United Nations University
UP Ukraine (FIPS 10-4 country code),Union Pacific Railroad (AAR reporting mark), Upper Peninsula (of Michigan),Uttar Pradesh
UPC United Pentecostal Church, Universal Product Code
UPDA Uganda People's Democratic Army
UPdM Università Popolare della Multimedialità
UPDM Unified Profile for DoDAF/MODAF
UPF Universitat Pompeu Fabra (Catalan, "Pompeu Fabra University")
UPI United Press International
UPN United Paramount Network
UPS Uninterruptible Power Supply,United Parcel Service
UPT Universal Personal Telecommunications
UPTN Upper Peninsula Telehealth Network
UPU Universal Postal Union
ur Urdu language (ISO 639-1 code)
UR Soviet Union (NATO country code, obsolete 1992)
URBSFA Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
urd Urdu language (ISO 639-2 code)
URD User requirements document
URI Uniform Resource Identifier,University of Rhode Island
URL (a/i) Uniform Resource Locator ("earl")
URU Uruguay (IOC and FIFA trigram, but not ISO 3166)
URY Uruguay (ISO 3166 trigram)
US United States (also ISO 3166 and FIPS 10-4 country code digram)
USAF United States Air Force
USAFSPC U.S. Air Force Space Command
USAACE United States Army Aviation Center of Excellence, Fort Rucker, Alabama
USAADAC United States Army Air Defense Artillery School, Fort Sill, Oklahoma
USAAS United States Army Armor School, Ft. Benning, Georgia
USAIC U.S. Army Infantry Center,U.S. Army Intelligence Center
USAID (a/i) United States Agency for International Development
USAP Union Sportive des Arlequins Perpignanais, United States Antarctic Program
USAPATRIOT Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
USAREUR United States Army Europe
USB Universal Serial Bus
USC United States Code,University of South Carolina,University of Southern California
USCG United States Coast Guard
USCINCSPACE United States Commander in Chief, Space Command
USD United States dollar (ISO 4217 currency code),USD(A&S),-Under Secretary of Defense for Acquisition and Sustainment,ASD(R&E) Under Secretary of Defense for Research and Engineering,USD(C)-(U.S.) Under Secretary of Defense (Comptroller)
USDA United States Department of Agriculture
USDI United States Department of the Interior
USDOE United States Department of Energy
USDPR (U.S.) Under Secretary of Defense for Personnel and iness
USDP (U.S.) Under Secretary of Defense for Policy
USDRE (U.S.) Under Secretary of Defense for Research and Engineering
USEC United States Enrichment Corporation
USFL United States Football League
USFWS United States Fish and Wildlife Service
USGS United States Geological Survey
USIA United States Information Agency
USJFCOM United States Joint Forces Command
USL United Soccer League, a third-level U.S. league, not to be confused with an earlier league of the same name.,United Soccer Leagues, the organization that operates the above league, plus several other lower-level leagues,University of Southwestern Louisiana, a former name for the school now known as the University of Louisiana at Lafayette
USMC United States Marine Corps
USMNT United States men's national (soccer) team
USN United States Navy
USNA United States National Arboretum-United States Naval Academy
USNB United States Naval Base
USNG United States National Grid
USNH United States Naval Hospital
USNI United States Naval Institute
USNO U.S. Naval Observatory
USNOFS United States Naval Observatory Flagstaff Station
USNP United States Newspaper Program
USNR United States Navy Reserve
USNS United States Naval Ship
USNY University of the State of New York (usually pronounced "use-knee")
USNZ University Sport New Zealand
USPS United States Postal Service
USPTO United States Patent and Trademark Office
USR Universal System Resources (/usr, directory in a *NIX filesystem), User
USS United States ship (sometimes meaningless, see Star Trek)
USSPACECOM United States Space Command
USSR Union of Soviet Socialist Republics
UST Underground Storage Tank
USTRANSCOM United States Transportation Command
USWNT United States women's national (soccer) team
UT Universal Time
UTEP (a/i) University of Texas at El Paso (pronounced you-tep)
UTM Universal Transverse Mercator (geographical co-ordinate system)
UU Unitarian Universalism-University of Utah-Unseen University
UUA Unitarian Universalist Association
UUID Universally Unique Identifier (see also GUID)
UUV Unmanned Underwater Vehicle
UV Burkina Faso (FIPS 10-4 country code; from Upper Volta)-ultraviolet
UVM Universal Verification Methodology, Universidad del Valle de México, University of Vermont, from its Latin name of Universitas Viridis Montis ("University of the Green Mountains"), UV mapping,UW[edit]
UW University of Washington
UWO University of Western Ontario
UWW United World Wrestling
UXO Unexploded ordnance
UY Uruguay (ISO 3166 and FIPS 10-4 country code digram)
UYU Uruguayan peso uruguayo (ISO 4217 currency code)
uz Uzbek language (ISO 639-1 code)
UZ Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
uzb Uzbek language (ISO 639-2 code)
UZB Uzbekistan (ISO 3166 trigram)
UZS Uzbek som (ISO 4217 currency code)
V 5 (in Roman numerals)-Vanadium-Volt
VA Vatican City-State (ISO 3166 digram)-Veterans Affairs (U.S. Department of)-Virginia (postal symbol)-
VACIS Vehicle And Container Inspection System
VACIS Victorian Ambulance Clinical Information System
VANOS Variable Nockenwelle System
VAO Vienna Art Orchestra
VASIS Visual Approach Slope Indicator System (aviation)
VAT Value-Added Tax-Vatican City-State (ISO 3166 trigram)
VB Victoria Bitter (beer)-Visual Basic
VBA Visual Basic for Applications
VC Saint Vincent and the Grenadines (FIPS 10-4 country code; ISO 3166 digram)-Victoria Cross
VCDS (Canada) Vice-Chief of the Defence Staff-VAG-COM Diagnostic System
vCJD Variant Creutzfeldt-Jakob disease
VCJCS Vice Chairman, Joint Chiefs of Staff
VCNO (U.S.) Vice Chief of Naval Operations
VCR Video cassette recorder
VCofS Vice Chief of Staff
VCT Saint Vincent and the Grenadines (ISO 3166 trigram)
VD North Vietnam (ISO 3166 digram, obsolete 1977)-Venereal Disease
VDFS VisualSVN Distributed File System (VDFS)
VDMOS (i/a) Vertical Double-diffused MOS transistor ("vee-dee-moss")
VDOT (i/a) Virginia Department of Transportation ("vee-dot")
VDR North Vietnam (ISO 3166 trigram, obsolete 1977)
ve Venda language (ISO 639-1 code)
VE Venezuela (FIPS 10-4 country code; ISO 3166 digram)
VEB Venezuelan bolívar (ISO 4217 currency code)
VEEGA Venus Earth Earth Gravity Assist manœuvre
ven Venda language (ISO 639-2 code)
VEN Venezuela (ISO 3166 trigram)
VERDI Vittorio Emanuele Re D'Italia (Victor Emmanuel, King of Italy)
VERITAS Very Energetic Radiation Imaging Telescope Array System
VFA Victorian Football Association (historic Australian rules football league), Volatile Fatty Acid
VfD s for deletion (used in Wikipedia)
VFL Victorian Football League, the name of two distinct Australian rules football leagues:
VFM Value For Money
VFMO Very Fast Moving Object (astronomy)
VFR Visual Flight Rules
VFT Virtual Function Table
VFW Veterans of Foreign Wars
VG British Virgin Islands (ISO 3166 digram)
VGB British Virgin Islands (ISO 3166 trigram)
VH1 (a/i) Video Hits One
VHF Very High Frequency
vi Vietnamese language (ISO 639-1 code)
VI 6 (in Roman numerals)-
VIA Versatile Interface Adapter
VIC Victoria, Australia (postal symbol)-Video Interface Chip-Virginia Intermont College
VIDS Visual Information Display System
vie Vietnamese language (ISO 639-2 code)
VII 7 (in Roman numerals)
VIII 8 (in Roman numerals)
VIN (i/a) Vehicle Identification Number (ISO 3779)
VIP see entry
VIR U.S. Virgin Islands (ISO 3166 trigram)-Virgin Atlantic Airways (ICAO code)
VIS
VISCII VIetnamese Standard Code for Information Interchange
VIT Vellore Institute of Technology
VIVO Video In Video Out
VJ Video Jockey
VK Australia (ham radio code)-Västerbottens-Kuriren, a Swedish daily newspaper
VLA Very Large Array-(UK) Veterinary Laboratories Agency
VLAD (a/i) Vertical Line Array DIFAR
VLBA Very Long Baseline Array
VLF Very Low Frequency
VLIW Very Long Instruction Word
VLPFC VentroLateral PreFrontal Cortex
VLPMC VentroLateral PreMotor Cortex
VLSF Very Loud, Stink-Free
VLSI Very-large-scale integration
VLVS Very Loud, Very Stinky
VM Vietnam (FIPS 10-4 country code)
VMASC (i/a) Virginia Modeling Analysis & Simulation Center ("vee-mask")
VMF Variable Message Format
VMF Marine Fighting Squadron of the United States Marine Corps
VMN VentroMedial Nucleus (neurophysiology)
VN Vietnam (ISO 3166 digram)
VND Vietnamese đồng (ISO 4217 currency code)
VNIR Visible and Near InfraRed
VNM Vietnam (ISO 3166 trigram)
VNS see entry
VOA Voice of America
vo Volapük language (ISO 639-1 code)
VOC Vereenigde Oostindische Compagnie (Dutch East India Company)-Volatile organic compounds
VOIP Voice Over Internet Protocol
vol Volapük language (ISO 639-2 code)
VOLT Visual OpenType Layout Tool
Volvo Swedish supplier of commercial vehicles owned by Ford Motor Company. "Volvo" means "I roll" in Latin.
VON Victorian Order of Nurses
VOR VHF Omnidirectional Ranging
VOR Voice of Russia
VOX Voice-operated oscillator
VP (a/i) Vice-President ("veep")
VPN Virtual Private Network
VQ Vector Quantization-U.S. Virgin Islands (FIPS 10-4 territory code)
VR Virtual Reality
VRSG
VS Very Special (brandy grade)-vide supra (Latin, "see above")
VSAT Very Small Aperture Terminal ("vee-satt")
VSHORAD Very Short Range Air Defence
VSO Voluntary Services Overseas
VSOP
VSR Very Special Relativity
VT Vatican City-State (FIPS 10-4 country code),Vermont (postal symbol), Video tape,Virginia Tech
VTC Video Tele-Conference
VTEC Variable valve Timing and Electronic lift Control
VTOL Vertical Take-Off & Landing
VU Vanuatu (ISO 3166 digram)-Vedanta University
VUB Vrije Universiteit Brussel (Belgian university)
VUK
VUT Vanuatu (ISO 3166 trigram)
VUV Vanuatu vatu (ISO 4217 currency code)
VV Via Voice-Village Voice
VVAF Vietnam Veterans of America Foundation
VW Volkswagen
VZ Verizon Communications (NYSE code)
vzw vereniging zonder winstoogmerk (Dutch "non-profit organisation")
W3C World Wide Web Consortium
wa Walloon language (ISO 639-1 code)
WA Namibia (FIPS 10-4 country code; from West Africa),Washington state (postal symbol),Western Australia (postal symbol), World Archery (Federation)
WAAC Women's Army Auxiliary Corps (Britain) (World War I UK)
WAAF Women's Auxiliary Air Force (World War II UK)
WAC Western Athletic Conference, Women's Auxiliary Corps (World War II Canada),Women's Army Corps (World War II U.S.)
WACC Weighted Average Cost of Capital (accounting)
WACS What-A-Cartoon! Show
WAD Weapons Alert Designator
WAGGGS World Association of Girl Guides and Girl Scouts
WAGs Wives And Girlfriends (most notably of England national football team players at the 2006 FIFA World Cup, although the term existed earlier)
WAK Wake Island (ISO 3166 trigram, obsolete 1986)
WAL see entry
WAN Wide area network
WAP Wireless Application Protocol
WAPIMA What a pain in my ass
WAR With All Respect
WAsP Short form of WAAAAP (Wind Atlas Analysis and Application Program)
WASP White Anglo-Saxon Protestant,Wide Angle Search for Planets,Women Airforce Service Pilots
WAYP
Wb Weber
WB Warner Bros.-Welcome Back (Internet shorthand)
WBA Warner Bros. Animation,West Bromwich Albion (F.C.),World Boxing Association
WBC World Boxing Council
WBE Work Breakdown Element
WBO World Boxing Organization
WbW with best wishes,white boy wasted,WC[edit]
WC Water Closet-Winston Churchill-World Cup (sports)
WCBO World Chess Boxing Organisation
WCBP World Center for Birds of Prey
WCL World Confederation of Labour
WCS Weapon Control Status-Wildlife Conservation Society
WCW World Championship Wrestling
WDC Western Design Center-World Data Center
WDWR Walt Disney World Resort
WDIN Wildlife Disease Information Node
WEBS Weapon Effectiveness Battle Simulation
WEC World Extreme Cagefighting
WEEE Waste Electrical and Electronic Equipment
WEF World Economic Forum
WEIRD Western, educated, industrialized, rich, democratic (cultural identifier of a disproportionate number of psychology test subjects)
WEM West Edmonton Mall
WEU Western European Union
WEZ (a/i) Weapon Engagement Zone
WF Wallis and Futuna Islands (ISO 3166 digram)
WFC Women's Forage Corps (World War II UK)
WFD Weapon of Focused Destruction
WFF Wallops Flight Facility
WFP World Food Program
WFZ Weapons Free Zone
WFI Water for Injection
WG Working Group-Wade-Giles
WH Wehrmacht Heer (German World War II army vehicle licence plate code)
WHAM Wisconsin Hydrogen-Alpha Mapping (telescope)
WHI Women's Health Initiative
WHIP Walks plus hits per inning pitched
WHO World Health Organization
WHS (U.S.) Washington Headquarters Services
WI Western Sahara (FIPS 10-4 country code)-Wisconsin (postal symbol)-Women's Institute
WIA Wounded In Action-Wireless Institute of Australia (Amateur Radio)
WIIFM What's in it for me?
WIMP Weakly Interacting Massive Particle-Windows, Icons, Menus, Pointers
WIPO (a/i) World Intellectual Property Organization
WIPP [Nuclear] Waste Isolation Pilot Plant
WIYN Wisconsin Indiana Yale NOAO telescope consortium
WK Wake Island (ISO 3166 digram, obsolete 1986)
WKYP Will Keep You Posted
WKX World Kickboxing Xtrm
WL Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
WLB Women's Land Brigade (World War II Canada)
WLF Wallis and Futuna Islands (ISO 3166 trigram)
wln Walloon language (ISO 639-2 code)
WLOG Without Loss Of Generality (see WOLOG)
WM Wehrmacht Marine (German World War II navy vehicle licence plate code)
WMANUS West Midlands Area National Union of Students
WMD Weapon[s] of Mass Destruction-World Movement for Democracy †
WMI Wildlife Management Institute
WMO World Meteorological Organization
WNA World Nuclear Association
WNF "Will Not Fix"
WNL Medical initialism for "Within Normal Limits"
WNIT Women's National Invitation Tournament
WNSD What's New, Scooby-Doo?
WNW West North-West
wo Wolof language (ISO 639-1 code)
WO Warrant Officer
WOF Width of Fabric
WOFT Waste Of Fucking Time
WOFTAM Waste Of Fucking Time And Money
WOI (a/i) Wheels Of Italy
wol Wolof language (ISO 639-2 code)
WOM Write Only Memory
WOS Wilson Ornithological Society
WOSM World Organization of the Scout Movement,Worldwide Oil Spill Model
WOT Waste Of Time
WP White Phosphorus (ammunition)
WPB War Production Board during World War II
WPE World Pork Expo
WPK Wider Peacekeeping
WPT World Poker Tour-World Premiere Toons
WPP Witness Protection Program
WR Wide Receiver (football)
WRAC Women's Royal Army Corps (World War II UK)
WRAIR Walter Reed Army Institute of Research
WRBWWRM "We Best What We Most"
WRC World Rally Championship
WRC World Religions Conference
WRNS Women's Royal Naval Service (World War II UK) (pronounced "wrens")
WRVS Women's Royal Voluntary Service, now only known by the acronym (UK)
WRS Worldwide Reference System
WRT Writer Response Theory, WRT-"With respect to", especially in fields such as Mathematics., World Rally Team, Wallace Roberts & Todd, LLC (Urban Planning and Design), Wireless Ronin Technologies (digital signage), NHS Workforce Review Team,The Linksys routers whose model name start with 'WRT', Wholesale, Trade, Retail sector, category in employment and economics statistics, Wireless Receiver/Transmitter ( computer networks/IT ),Third party firmware for the Linksys WRT routers and compatible models from other vendors., Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.,WS[edit]
WS Samoa (ISO 3166 and FIPS 10-4 country code digram; from the country's former name of Western Samoa), Writer to the Signet (a Scottish solicitor)
WSC Weapon System Catalogue
WSDL Web Services Description Language
WSJ (The) Wall Street Journal
WSL White Star Line (shipping company),Women's Super League, used to describe England's current top women's association football league and former top women's rugby union competition,Workers' Socialist League (UK political party)
WSM Samoa (ISO 3166 trigram; from Western Samoa), Winchester Short Magnum (family of rifle cartridges)
WSMR (a/i) White Sands Missile Range ("whiz-murr")
WSROC Western Sydney Regional Organisation of Councils
WSSM Winchester Super Short Magnum (family of rifle cartridges)
WST Water Soluble Tetrazolium (assay), Samoan tālā (ISO 4217 currency code)
WSTC Women Signallers Territorial Corps (World War II UK)
WSW West South-West
WTB Wales Tourism Board-Warenterminbörse Hannover
WTB Want to Buy (a commonly used phrase in the online game "World of Warcraft")
WTC World Trade Center
WTF What the fuck?; also What a Terrible Failure (android)
WTFH What The Fucking Hell
WTH What the Hell
WTNWD Wait To Next Working Day (a commonly used phrase to maintain work life balance)
WTO World Trade Organization
WTS Want to Sell (a commonly used phrase in the online game "World of Warcraft")
WU Wabash University-Washington University in St. Louis-Western Union-Windows Update-Work unit-WU Wien (German Wirtschaftsuniversität Wien, Vienna University of Economics and Business Administration)
WUU2 What you up to-Internet slang popular with teenagers.
WUBU2
WV West Virginia (postal symbol)
WVA World Veterinary Association
WVIAC West Virginia Intercollegiate Athletic Conference
WVR Women's Volunteer Reserve (World War II UK)
WVSC Women's Volunteer Service Corps (World War II Canada)
WVU West Virginia University
WVUIT West Virginia University Institute of Technology (note, however, that the initialism is almost never used; the popular name of the school is "WVU Tech")
WW see entry
WWE World Wrestling Entertainment
WWF World Wide Fund for Nature, from its original name of World Wildlife Fund, which remains the legal name in the U.S. and Canada,World Wrestling Federation
WWI World War I
WWII World War II
WWIII World War III
WWJD "What would Jesus do?"
WWS Wheaton Warrenville South High School
WWV Wagner-Werk-Verzeichnis (catalog of the works of Richard Wagner, and callsign of NIST's shortwave radio station in Fort Collins, Colorado)
WWW World Wide Web
WWWF World Wide Wrestling Federation
WXO Weather [Executive] Officer
WY Wyoming (postal symbol)
WYSIWYG What You See Is What You Get (pronounced "wizzy-wig". See entry for derived acronyms)
WYSIWYP What You See Is What You Print / What You See Is What You Pay ("wizzy-whip")
WZ Swaziland (FIPS 10-4 country code)
XAF BEAC (Banque des états de l'Afrique centrale) Central Africa CFA (Coopération financière en Afrique centrale) franc (ISO 4217 currency code)
XAG Silver Troy ounce (ISO 4217 currency code)
XAU Gold Troy ounce (ISO 4217 currency code)
XBA European Composite Unit (EURCO; Bonds market unit) (ISO 4217 currency code)
XBB European Monetary Unit (E.M.U.; Bonds market unit) (ISO 4217 currency code)
XBML eXtended Business Modelling Language
XC Ninety (in Roman numerals)
XCBL XML Common Business Library
XCD East Caribbean dollar (ISO 4217 currency code)
XD Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
Xe Xenon
XF Automobile made by Jaguar-Truck made by DAF Trucks-IATA code for Vladivostok Air
XFA XML Forms Architecture
XFC Xtreme Fighting Championships
XFD Fighter aircraft made by Douglas
Xfe X File Explorer
XFF X-Forwarded-For
XFG Exfoliation glaucoma
XFH 1932 prototype U.S. Navy fighter aircraft made by Hall-X-ray fluorescence holography
XFN XHTML Friends Network-IATA code for Xiangyang Liuji Airport
XFR Automobile made by Jaguar
XFT X FreeType interface library
XFW IATA code for Hamburg Finkenwerder Airport
XG Automobile made by Hyundai
XGA Extended Graphics Array
XGE Xoreax Grid Engine-Signal for "I Surrender"
XGG IATA code for Gorom Gorom Airport
XGN IATA code for Xangongo Airport
XGP Extreme Game Player
XGR IATA code for Kangiqsualujjuag (Georges River) Airport
xh Xhosa language (ISO 639-1 code)
xho Xhosa language (ISO 639-2 code)
XHTML eXtensible Hypertext Markup Language
XHR eXtra high Image resolution-XMLHTTPRequest
XI Eleven (in Roman numerals)
XII Twelve (in Roman numerals)
XIII Thirteen (in Roman numerals)
XIV Fourteen (in Roman numerals)
XIX Nineteen (in Roman numerals)
XJ Automobile made by Jaguar-Automobile made by Jeep
XJL Amphibian aircraft made by Columbia-Automobile made by Jaguar
XJS Automobile made by Jaguar
XK Automobile made by Jaguar-Automobile made by Jeep-Kell blood group precursor
XKA IATA code for Kantchari Airport
XKB X keyboard extension
XKE Automobile made by Jaguar
XKH IATA code for Xieng Khouang Airport
XKR Automobile made by Jaguar
XKS IATA code for Kasabonika Airport
XKY IATA code for Kaya Airport
XL eXtra Large-Forty (in Roman numerals)
XML eXtensible Markup Language
XMSF eXtensible Modelling and Simulation Framework
XN Christian-Nordic Patent Institute
XNA IATA code for Northwest Arkansas Regional Airport-X-No-Archive-Xeno Nucleic Acid
XNC X Northern Captain
XNN IATA code for Xining Caojiabao Airport
XNS Xerox Network Systems-Extensible Name Service-Christians
XNU X is Not Unix
XO Χριστιανός Ορθόδοξος (Xristianos Orthodoksos, Greek for "Eastern Orthodoxy")-eXecutive Officer-eXtra Old (brandy grade)
XOF BCÉAO (Banque centrale des états de l'Afrique de l'Ouest) West African CFA (Communauté financière d'Afrique) franc (ISO 4217 currency code)
XP eXperience Point (role-playing games)
XPD Palladium Troy ounce (ISO 4217 currency code)
XPF CFP franc (ISO 4217 currency code)
XPT Platinum Troy ounce (ISO 4217 currency code)
XQJ XQuery API for Java™
XQP IATA code for Quepos La Managua Airport
XQU IATA code for Qualicum Beach Airport
XRML eXtensible Rights Markup Language
XRP a cryptocurrency
XS Xiaolin Showdown
XSL eXtensible Style Language
XTMH eXtreme Technology Multiprocessor Hyperlanguage
XUL XML User Interface Language
XV Fifteen (in Roman numerals)
XVA an X-Value Adjustment (in finance)
XVI Sixteen (in Roman numerals)
XVII Seventeen (in Roman numerals)
XVIII Eighteen (in Roman numerals)
XWB (Airbus A350) "Extra Wide Body"
XWF Xcitement Wrestling Federation
XWM X window manager
XWN eXtended WordNet
XWS X Window System
XX Twenty (in Roman numerals)
XXX Hardcore pornography (film rating)-Thirty (in Roman numerals)
XYA IATA code for Yandina Airport
Xyl Xylobium
XZA IATA code for Zabré Airport
XZN Triple square screw driver
y Yocto-
Y Yotta-Yttrium
Y2K Year Two Thousand
yA Yoctoampere
Ya Yottayear
YA Yottaampere-Young Adult
YAC (a/i) Youth-Adult Committee
YAFLA Yet Another Five Letter Abbreviation
YAP Young Aspiring Professional
YaBPr Yet another Brother Pat rant
YABSLAG Yet another boy singing like a girl
Yb Ytterbium
YB Youcef Benzouada (Southern Algerian name)
yC Yoctocoulomb
YC Yottacoulomb
YD People's Democratic Republic of Yemen (ISO 3166 digram, obsolete 1990)
YDS Yosemite Decimal System (climbing)
YE Yemen (ISO 3166 digram)
YEM Yemen (ISO 3166 trigram)-Manitowaning/Manitoulin East Municipal Airport IATA airport code
YER Yemeni rial (ISO 4217 currency code)
yF Yoctofarad
YF Yottafarad
yg Yoctogram
Yg Yottagram
YGM You've got mail
Ygo Yu-Gi-Oh!
YGCO Yamaneko Group of Comet Observers
yH Yoctohenry
YH Yottahenry
YHS Ya Hoor sur!
YHBT You Have Been Trolled
YHIH1 You Heard It Here First (lowercase: yhih1, pronounced yi-hi)
YHII You Have It Inside
yi Yiddish language (ISO 639-1 code)
Yi Yobi
YI Serbia and Montenegro (deprecated FIPS 10-4 country code, now RB (Serbia) and MJ (Montenegro))
yid Yiddish language (ISO 639-2 code)
Yippie Youth International Party + suffix
yJ Yoctojoule
YJ Yottajoule
yK Yoctokelvin
YK Yottakelvin
YKYFCW You know you're from Christchurch when (post-earthquake joke)
yL Yoctolitre
YL Yottalitre
ym Yoctometre
Ym Yottametre
YM Yemen (FIPS 10-4 country code)-Your Magazine (originally Young Miss, later Young & Modern)
YMCA Young Men's Christian Association
YMD People's Democratic Republic of Yemen (ISO 3166 trigram, obsolete 1990)
YMMD You Make My Day
YMMV Your Mileage May Vary (adapted from EPA's automobile mileage estimates, used as an idiom to convey "results may vary"
yN Yoctonewton
YN Yottanewton
yo Yoruba language (ISO 639-1 code)
YO former Yugoslavia (NATO country code, obsolete 1993)
YOLO You Only Live Once
yor Yoruba language (ISO 639-2 code)
YPA Yards per Pass Attempt (football statistic)
YPG Yekîneyên Parastina Gel (Kurdish, "People's Protection Units" or "People's Defense Units")
YPIO Your Problem Is Obvious
YPO Young Presidents' Organization
YRR "Young, Restless, and Reformed", an alternative name for the New Calvinist movement
ys Yoctosecond
yS Yoctosiemens
Ys Yottasecond
YS Yottasiemens
YSA Young Single Adult, a designation used by the LDS Church for single adults under 30,Young Socialist Alliance,Youth Service America
YSI Young Scots for Independence
yT Yoctotesla
YT Mayotte (ISO 3166 digram)-Yottatesla-Yukon Territory (postal symbol)
YTD Year-To-Date
YTM Yield to Maturity
YTS Youth Training Scheme
YTT Yoshi Topsy-Turvy
YU York University-former Yugoslavia (ISO 3166 digram, obsolete 2003)
YUG former Yugoslavia (ISO 3166 trigram, obsolete 2003)
Yuppie Young Urban Professional + suffix
yV Yoctovolt
YV Yottavolt
yW Yoctowatt
YW Yottawatt
YWCA Young Women's Christian Association
YWMV Your Wallet May Vary (to convey "our budgets are different as far as what is affordable / justifiable")
YYH YuYu Hakusho
YYK Yeah you know
z Zepto
Z Zetta
za Zhuang languages (ISO 639-1 code)
zA Zeptoampere
ZA South Africa (ISO 3166 digram)-Zambia (FIPS 10-4 country code)-Zettaampere
ZAF South Africa (ISO 3166 trigram)
ZAMS Zero age main sequence
ZAR South African rand (ISO 4217 currency code)-Zaire (ISO 3166 trigram, obsolete 1997)
ZAS (i/a) Zylinder Abschaltung System
ZBT Zero-Balance Transfer (accounting)
zC Zeptocoulomb
ZC Zettacoulomb
ZCM (n) ZENworks Configuration Management
ZCMK Zone Control Master Key
ZCU Zimbabwe Cricket Union
ZEBRA Zebra
zF Zeptofarad
ZF Zettafarad
zg Zeptogram
Zg Zettagram
zh Chinese language (ISO 639-1 code)
zH Zeptohenry
ZH Zettahenry
zha Zhuang languages (ISO 639-2 code)
zho Chinese language (ISO 639-2 code)
Zi Zebi
ZI Zimbabwe (FIPS 10-4 country code)
ZIF Zero Insertion Force (The device on a)
ZIP Zone Improvement Plan code
ZIRP Zero interest-rate policy
zJ Zeptojoule
ZJ Zettajoule
zK Zeptokelvin
ZK Zettakelvin
zL Zeptolitre
ZL Zettalitre
zm Zeptometre
Zm Zettametre
ZM Zambia (ISO 3166 digram)
ZMB Zambia (ISO 3166 trigram)
ZMK Zambian kwacha (ISO 4217 currency code)
zN Zeptonewton
Zn Zinc
ZN Zettanewton
ZOPFAN Zone of Peace, Freedom And Neutrality
Zr Zirconium
ZR Zaire (ISO 3166 digram; obsolete 1997)
zs Zeptosecond
Zs Zettasecond
ZS Zettasiemens
zT Zeptotesla
ZT Zettatesla
zu Zulu language (ISO 639-1 code)
ZUG Z User Group
ZUI Zooming User Interface ("zoo-wee")
zul Zulu language (ISO 639-2 code)
zV Zeptovolt
ZV Zettavolt
zW Zeptowatt
ZW Zettawatt-Zimbabwe (ISO 3166 digram)
ZWD Zimbabwe dollar (ISO 4217 currency code)
ZWE Zimbabwe (ISO 3166 trigram)
ZZZ to be tired (internet slang)
# coding=utf-8
ignore_list = ('Search-Navigation','Tools-What links','Top-','Contents','Magyar')
with open('AcronymsFile.csv','r') as inp:
data = inp.read().split('\n')
with open('clean_AcronymsFile.csv','w') as out:
out.write('acronym'+'\t'+'definition'+'\n')
for line in data:
if not line.startswith(ignore_list):
tmp = line.split('-')
acronym = tmp[0].strip()
definition = '-'.join([x.strip() for x in tmp[1:]])
out.write(acronym+'\t'+definition+'\n')
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