Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym ACK is...

ACK is

Arbeitsgemeinschaft Christlicher Kirchen
Anglican Church Of Kenya

More Meanings For ACK:

Acknowledgment
Acknowledge
A Cursed Keyboard
Acknowledgment
A Continual Kvetch
Armstrong World Industries, Inc.
Arbeitsgemeinschaft Christlicher Kirchen
Anglican Church Of Kenya
Nantucket, Massachusetts USA
Alles clar Kuddel

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