/ Dictionary / Index T trifoliate: Meaning and Definition of Find definitions for: tri•fo•li•ate Pronunciation: (trī-fō'lē-it, -āt"), [key] — adj. having three leaflets, lobes, or foils; trefoil. trifoliolate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trifoliate (Thesaurus) trifold trifoliate orange Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language