ack

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see also: ACK

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Noun

ack (plural acks)

1. (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.

2. (data communications) acknowledgment signal

Antonyms

• (data communications) nack, nak

Interjection

1. (radio communications) acknowledged

Interjection

1. Expressing distaste, alarm, or trepidation.

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ACK

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Noun

ack (plural acks)

1. (networking) An acknowledgement either of a packet or a message received from a network.

Antonyms

• NAK

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