ACK

character or message sent by a receiving modem to a sending modem to indicate that a data packet has arrived complete and error-free (Computers, Telecommunications)

Ack is sometimes used as an exclamation, an onomatopoeia for disgust, or as choking on something foul.ACK as an abbreviation that may refer to:ACK (computing), a signal used in computing and other fields to indicate acknowledgement, including:ACK (TCP), a packet message used in the Transmission Control Protocol to acknowledge receipt of a packet.Acknowledge character, a control character used in ASCII.ACK (domain transfer), term used in transfer of domains.Acklington railway station (National Rail: ACK), a rail station in the United Kingdom.Nantucket Memorial Airport (IATA code: ACK), a Massachusetts airport (referring to Ackerly Field).
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Abbreviation for acknowledge character.

A transmission control character transmitted by the receiving station as an affirmative response to the sending station. Note: An acknowledge character may also be used as an accuracy control character.

1. <character> /ak/ The mnemonic for the ACKnowledge character, ASCII code 6.
2. A message transmitted to indicate that some data has been received correctly. Typically, if the sender does not receive the ACK message after some predetermined time, or receives a NAK, the original data will be sent again.
[Jargon File]
(1997-01-07)

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