/ Dictionary / Index D dilatate: Meaning and Definition of Find definitions for: di•lat•ate Pronunciation: (di-lā'tāt, dil'u-tāt"), [key] — adj. dilated; broadened. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dilatant dilatation Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language