/ Dictionary / Index T triphyllous: Meaning and Definition of Find definitions for: tri•phyl•lous Pronunciation: (trī-fil'us), [key] — adj. Bot. having three leaves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. triphylite tripinnate Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language