/ Dictionary / Index E effervesce: Meaning and Definition of Find definitions for: ef•fer•vesce Pronunciation: (ef"ur-ves'), [key] — -vesced, -vesc•ing. to give off bubbles of gas, as fermenting liquors. to issue forth in bubbles. to show enthusiasm, excitement, liveliness, etc.: The parents effervesced with pride over their new baby. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: effervesce (Thesaurus) efferent effervescent Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language