/ Dictionary / Index T trilobate: Meaning and Definition of Find definitions for: tri•lo•bate Pronunciation: (trī-lō'bāt, trī'lu-bāt"), [key] — adj. having three lobes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trilobate (Thesaurus) trillium trilobed Related Content Daily Word Quiz: verdant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language