/ Dictionary / Index T tumefaction: Meaning and Definition of Find definitions for: tu•me•fac•tion Pronunciation: (t"mu-fak'shun, ty"-), [key] — n. an act of making or becoming swollen or tumid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tumefaction (Thesaurus) tumefacient tumefy Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language