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exclusion

[ik-skloo-zhuh n] /ɪkˈsklu ʒən/
noun
1.
an act or instance of excluding.
2.
the state of being excluded.
3.
Physiology. a keeping apart; blocking of an entrance.
Origin
late Middle English
1375-1425
1375-1425; late Middle English < Latin exclūsiōn- (stem of exclūsiō), equivalent to exclūs(us) (past participle of exclūdere to shut out; see exclude) + -iōn- -ion
Related forms
exclusionary, adjective
nonexclusion, noun
preexclusion, noun
self-exclusion, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for nonexclusion

exclusion

/ɪkˈskluːʒən/
noun
1.
the act or an instance of excluding or the state of being excluded
Derived Forms
exclusionary, adjective
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 nonexclusion
exclusion
1610s, from L. exclusionem, noun of action from excludere (see exclude). Related: Exclusionary (1817).
Online Etymology Dictionary, © 2010 Douglas Harper
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nonexclusion in Medicine

exclusion ex·clu·sion (ĭk-sklōō'zhən)
n.
Surgical isolation of a part or segment without removal from the body.

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