/ Dictionary / Index T tricotyledonous: Meaning and Definition of Find definitions for: tri•cot•y•le•don•ous Pronunciation: (trī-kot"l-ēd'n-us, trī"kot-), [key] — adj. Bot. having three cotyledons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tricotine tricresol Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language