get-term-being-edited-usage.php

<?php

function km_do_something_when_term_12_is_being_edited() {

	$term = km_get_term_being_edited();

	if ( ! $term || 12 !== $term->term_id ) {
		return;
	}

	// Put code here that should only run when the term with an
	// ID of 12 is being edited.
}
add_action( 'admin_init', 'km_do_something_when_term_12_is_being_edited' );