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[ik-spuhl-shuh n]
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  1. the act of driving out or expelling: expulsion of air.
  2. the state of being expelled: The prisoner's expulsion from society embittered him.
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Origin of expulsion

1350–1400; Middle English < Latin expulsiōn- (stem of expulsiō), equivalent to expuls(us) driven out (past participle of expellere to expel) + -iōn- -ion
Related formsnon·ex·pul·sion, nounre·ex·pul·sion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for expulsion


  1. the act of expelling or the fact or condition of being expelled
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Word Origin

C14: from Latin expulsiō a driving out, from expellere to expel
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

Word Origin and History for expulsion


c.1400, from Old French expulsion, from Latin expulsionem (nominative expropriatio), noun of action from past participle stem of expellere "drive out" (see expel).

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Online Etymology Dictionary, © 2010 Douglas Harper