/ Dictionary / Index D defervescence: Meaning and Definition of Find definitions for: de•fer•ves•cence Pronunciation: (dē"fur-ves'uns, def"ur-), [key] — n. Med. abatement of fever. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: defervescence (Thesaurus) defervesce defiance Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language