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a combining form of counter3 , used with the meanings “against,” “contrary,” “opposite,” “in opposition or response to” (countermand); “complementary,” “in reciprocation,” “corresponding,” “parallel” (counterfoil; counterbalance); “substitute,” “duplicate” (counterfeit).
Origin of counter-
Middle English countre-; see counter3 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for counter-


against; opposite; contrary: counterattack
complementary; corresponding: counterfoil
duplicate or substitute: counterfeit
Word Origin
via Norman French from Latin contrā against, opposite; see contra-
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for counter-

word-forming element meaning "against; in return; corresponding," from Anglo-French countre-, French contre-, from Latin contra "opposite, contrary to, against, in return," also used as a prefix (see contra-).

Online Etymology Dictionary, © 2010 Douglas Harper
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counter- in Medicine

counter- pref.

  1. Contrary; opposite; opposing: countertransport.

  2. Corresponding; complementary: counterincision.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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