/ Dictionary / Index T trimorph: Meaning and Definition of Find definitions for: tri•morph Pronunciation: (trī'môrf), [key] — n. Crystall. a substance existing in three structurally distinct forms; a trimorphous substance. any of the three forms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trimonthly trimorphism Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language