Phrase guide

identification friend or foe

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

An identification system designed for command and control. It enables military and national (civilian air traffic control) interrogation systems to identify aircraft, vehicles or forces as friendly and to determine their bearing and their range from the interrogator.

In a civilian aircraft: a transponder that responds by sending a code identifying itself.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

An identification system designed for command and control. It enables military and national (civilian air traffic control) interrogation systems to identify aircraft, vehicles or forces as friendly and to determine their bearing and their range from the interrogator.

In a military aircraft: a transponder that responds by sending a similarly coded signal, only when detecting a code indicating the radar is part of the friendly forces' network.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

3 source translations are retained for this English entry.

  • Finnish: omatunnuslaite — identification friend or foe (IFF)
  • German: Freund-Feind-Erkennung — identification friend or foe (IFF)
  • Italian: identificazione amico o nemico — identification friend or foe (IFF)