/ Dictionary / Index T tripterous: Meaning and Definition of Find definitions for: trip•ter•ous Pronunciation: (trip'tur-us), [key] — adj. Bot. three-winged; having three wings or winglike expansions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tripteral Triptolemus Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language