Ack
Origin 1
Arbitrary formation.
Full definition of ack
Noun
ack
(plural acks)- (military, now historical) The letter A as used in signalling and other types of communications.
- 1929, Frederic Manning, The Middle Parts of Fortune, Vintage 2014, p. 173:They had to begin at the beginning: learning the Morse code, flag-wagging, a succession of acks, and practice on the buzzer.
- (data communications) acknowledgment signal
Alternative forms
- (data communications) ACK
Interjection
- (radio communications) acknowledged
Derived terms
Anagrams
Origin 2
Imitative.
Interjection
- Expressing distaste, alarm, or trepidation.----