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See more synonyms for reactivate on Thesaurus.com
verb (used with object), re·ac·ti·vat·ed, re·ac·ti·vat·ing.
  1. to render active again; revive.
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verb (used without object), re·ac·ti·vat·ed, re·ac·ti·vat·ing.
  1. to be active again.
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Origin of reactivate

First recorded in 1900–05; re- + activate
Related formsre·ac·ti·va·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for reactivation

Historical Examples

  • He called this phenomenon of reactivation or secondary exaggeration of infantile reminiscences "regression."

    Collected Papers on Analytical Psychology

    C. G. Jung

British Dictionary definitions for reactivation


  1. (tr) to make (something) active or functional again
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Derived Formsreactivation, noun
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 reactivation



1902, from re- "back, again" + activate. Related: Reactivated; reactivating; reactivation.

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Online Etymology Dictionary, © 2010 Douglas Harper

reactivation in Medicine


  1. To make active again.
  2. To restore the ability to function or the effectiveness of.
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Related formsre•ac′ti•vation n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.