[ ik-skloo-zhuh n ]
/ ɪkˈsklu ʒən /


an act or instance of excluding.
the state of being excluded.
Physiology. a keeping apart; blocking of an entrance.

Origin of exclusion

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

ex·clu·sion·ar·y, adjectivenon·ex·clu·sion, nounpre·ex·clu·sion, nounself-ex·clu·sion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for exclusionary

British Dictionary definitions for exclusionary


/ (ɪkˈskluːʒən) /


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

Medicine definitions for exclusionary


[ ĭk-sklōōzhən ]


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.