/ Dictionary / Index I intraday: Meaning and Definition of Find definitions for: in•tra•day Pronunciation: (in'tru-dā"), [key] — adj. occurring during a single day. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. intracutaneous test intradermal 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