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List phrases that spell out ACK 

We found 24 dictionaries with English definitions that include the word ACK: Click on the first link on a line below to go directly to a page where "ACK" is defined. General (7 matching dictionaries) Ack, ack: Wordnik [home, info] ACK: Wiktionary [home, info] ack: Infoplease Dictionary [home, info] ACK, ack: Dictionary.com [home, info] ACK (TCP), ACK (computing), ACK (disambiguation), ACK (networking), ACK, Ack (Perl), Ack (command-line utility): Wikipedia, the Free Encyclopedia [home, info] Ack: Rhymezone [home, info] ack: Stammtisch Beau Fleuve Acronyms [home, info] Business (2 matching dictionaries) ACK: Travel Industry Dictionary [home, info] ACK: BusinessDictionary.com [home, info] Computing (10 matching dictionaries) ACK: Free On-line Dictionary of Computing [home, info] ACK: Netlingo [home, info] ACK: CCI Computer [home, info] ACK: BABEL: Computer Oriented Abbreviations and Acronyms [home, info] ACK: CNET Internet Glossary [home, info] ACK: Computer Telephony & Electronics Dictionary and Glossary [home, info] ACK: Hacking Lexicon [home, info] ACK: SMS Dictionary [home, info] ACK: I T Glossary [home, info] ACK (TCP), ACK (computing), ACK: Encyclopedia [home, info] Medicine (1 matching dictionary) ACK: online medical dictionary [home, info] Miscellaneous (2 matching dictionaries) ACK: Acronym Finder [home, info] ACK: AbbreviationZ [home, info] Tech (2 matching dictionaries) ACK: Webster's New World Telecom Dictionary [home, info] ACK: DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations [home, info]

Quick definitions from WordNet (Ack) ▸ name:  A surname (very rare: popularity rank in the U.S.: #53195)