/ Dictionary / Index D disintegration: Meaning and Definition of Find definitions for: dis•in•te•gra•tion Pronunciation: (dis-in"tu-grā'shun), [key] — n. the act or process of disintegrating. decay (def. 8). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: disintegration (Thesaurus) disintegrate disintegration constant Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language