/ Dictionary / Index I intumesce: Meaning and Definition of Find definitions for: in•tu•mesce Pronunciation: (in"too-mes', -tyoo-), [key] — -mesced, -mesc•ing. to swell up, as with heat; become tumid. to bubble up. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: intumesce (Thesaurus) intuitivism intumescence Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language