/ Dictionary / Index T triseptate: Meaning and Definition of Find definitions for: tri•sep•tate Pronunciation: (trī-sep'tāt), [key] — adj. Bot., Zool. having three septa. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trisepalous triserial Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language