/ Dictionary / Index T triecious: Meaning and Definition of Find definitions for: tri•e•cious Pronunciation: (trī-ē'shus), [key] — adj. Bot. trioecious. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tridymite tried Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language