/ Dictionary / Index T trigon: Meaning and Definition of Find definitions for: tri•gon Pronunciation: (trī'gon), [key] — n. a triangle. an ancient Greek stringed instrument with a triangular shape. trine. triplicity. trigon. Pronunciation: [key] trigonometric. trigonometrical. trigonometry. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trigon (Thesaurus) trigo trigonal Related Content Daily Word Quiz: benevolent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language