1. (abbreviation) .  (computing) : An acknowledgement either of a packet or a message received from a network.
  2. Noun.  (context, signalese) A in RAF phonetic alphabet.
  3. Noun.  (context, data communications) acknowledgment signal.
  4. Interjection.  (context, radio communications) acknowledged.
  5. Interjection.  Expressing distaste, alarm, or trepidation.

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This entry was last updated on RefTopia from its source on 3/20/2012.