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ACH

automated clearinghouse.
00:10
Ach is always a great word to know.
So is doohickey. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a gadget; dingus; thingumbob.

ACh

Biochemistry.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
ach (ɑːx) [Click for IPA pronunciation guide]
 
interj
(Scot) Also: och an expression of surprise, impatience, disgust, etc

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

ach
aspirated form of ah, in Eng. often used to represent Ger. or Celtic speech.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

Ach abbr.
acetylcholine

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Abbreviations & Acronyms
ACh
acetylcholine
ACH
  1. Association for Computers and the Humanities

  2. automated clearing house

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences from the web
Ach transactions take several days to clear through the system.
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