[ in-kloo-zhuh n ]
/ ɪnˈklu ʒən /


Origin of inclusion

1590–1600; 1945–50 for def 7; < Latin inclūsiōn- (stem of inclūsiō) a shutting in, equivalent to inclūs(us) (see incluse) + -iōn- -ion

Related forms

non·in·clu·sion, nounpre·in·clu·sion, nounre·in·clu·sion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for inclusion

British Dictionary definitions for inclusion


/ (ɪnˈkluːʒən) /


the act of including or the state of being included
something included
geology a solid fragment, liquid globule, or pocket of gas enclosed in a mineral or rock
  1. the relation between two sets that obtains when all the members of the first are members of the secondSymbol: XY
  2. strict inclusion or proper inclusion the relation that obtains between two sets when the first includes the second but not vice versaSymbol: XY
engineering a foreign particle in a metal, such as a particle of metal oxide
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 inclusion


[ ĭn-klōōzhən ]


A nonliving mass, such as a droplet of fat, in the cytoplasm of a cell.
The process by which a foreign or heterogenous structure is misplaced in another tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.