/ Dictionary / Index I illuminative: Meaning and Definition of Find definitions for: il•lu•mi•na•tive Pronunciation: (i-l'mu-nā"tiv, -nu-tiv), [key] — adj. giving light; illuminating. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. illumination illuminator Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language