ACK Definition

noun

(military, now historical) The letter A as used in signalling and other types of communications.

Wiktionary

(data communications) Acknowledgment signal.

Wiktionary

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

Wiktionary
interjection

(radio communications) Acknowledged.

Wiktionary
Expressing distaste, alarm, or trepidation.
Wiktionary

Other Word Forms of ACK

Noun

Singular:
ACK
Plural:
acks

Origin of ACK

  • Arbitrary formation.

    From Wiktionary

  • Imitative.

    From Wiktionary

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ACK