/ Dictionary / Index E effulgent: Meaning and Definition of Find definitions for: ef•ful•gent Pronunciation: (i-ful'junt, i-fool'-), [key] — adj. shining forth brilliantly; radiant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: effulgent (Thesaurus) effrontery effuse Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language