/ Dictionary / Index I iris-in: Meaning and Definition of Find definitions for: i•ris-in Pronunciation: (ī'ris-in'), [key] — n. Motion Pictures, Television. the gradual appearance of an image or scene through an expanding circle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Irish yew iris-out Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language