/ Dictionary / Index E evanescent: Meaning and Definition of Find definitions for: ev•a•nes•cent Pronunciation: (ev"u-nes'unt), [key] — adj. vanishing; fading away; fleeting. tending to become imperceptible; scarcely perceptible. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: evanescent (Thesaurus) evanesce Evang. Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language