What does NACK stand for?

What does NACK mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: NACK.

We've found a total of 5 definitions for NACK:

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Negative ACKnowledge

Computing » Assembly


Negative ACKnowledge

Computing » General


Network of Anyone Collecting Keychains

Miscellaneous » Hobbies


Negative ACKnowledge

Computing » Networking


Negative ACKnowledge

Computing » Software


What does NACK mean?

To acknowledge negatively; to send a NAK signal to.

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"NACK." Abbreviations.com. STANDS4 LLC, 2014. Web. 21 Dec. 2014. <http://www.abbreviations.com/NACK>.

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