/ Dictionary / Index T trifold: Meaning and Definition of Find definitions for: tri•fold Pronunciation: (trī'fōld"), [key] — adj. triple; threefold. having three parts: a trifold screen. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trifocal trifoliate 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