/ Dictionary / Index T tricuspidate: Meaning and Definition of Find definitions for: tri•cus•pi•date Pronunciation: (trī-kus'pi-dāt"), [key] — adj. Anat. having three cusps or flaps. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tricuspidate (Thesaurus) tricuspid tricuspid valve Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language