/ Dictionary / Index I iridescence: Meaning and Definition of Find definitions for: ir•i•des•cence Pronunciation: (ir"i-des'uns), [key] — n. iridescent quality; a play of lustrous, changing colors. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: iridescence (Thesaurus) irides iridescent 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