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[em-i-grey-shuh n]
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  1. an act or instance of emigrating.
  2. a body of emigrants; emigrants collectively.
  3. Physiology. diapedesis.
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Origin of emigration

1640–50; < Late Latin ēmīgrātiōn- (stem of ēmīgrātiō) removal. See emigrate, -ion
Related formsem·i·gra·tion·al, adjectivenon·em·i·gra·tion, nounre·em·i·gra·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for emigration


  1. the act or an instance of emigrating
  2. emigrants considered collectively
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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 emigration


1640s, from Late Latin emigrationem (nominative emigratio) "removal from a place," noun of action from past participle stem of Latin emigrare "move away, depart from a place," from ex- "out" (see ex-) + migrare "to move" (see migration).

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Online Etymology Dictionary, © 2010 Douglas Harper

emigration in Medicine


  1. The passage of white blood cells through the walls of small blood vessels.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.