• synonyms


[dis-in-tuh-grey-shuh n]
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  1. the act or process of disintegrating.
  2. Physics. decay(def 8).
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Origin of disintegration

First recorded in 1790–1800; disintegrate + -ion
Related formsnon·dis·in·te·gra·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Word Origin and History for disintegration


1796, noun of action from disintegrate.

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Online Etymology Dictionary, © 2010 Douglas Harper

disintegration in Medicine


  1. The breaking up of the component parts of a substance, as in catabolism or decay.
  2. The disorganization or disruption of mental processes in mental illness.
  3. The natural or induced transformation of an atomic nucleus from a more massive to a less massive configuration by the emission of particles or radiation.
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Related formsdis•inte•grate′ v.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.