/ Dictionary / Index F fluoresce: Meaning and Definition of Find definitions for: fluo•resce Pronunciation: (floo-res', flô-, flō-), [key] — -resced, -resc•ing. to exhibit fluorescence. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fluoresce (Thesaurus) fluorene fluorescein Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language