/ Dictionary / Index T trinitrotoluene: Meaning and Definition of Find definitions for: tri•ni•tro•tol•u•ene Pronunciation: (trī-nī"trō-tol'y-ēn"), [key] — n. Chem. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trinitrotoluene (Thesaurus) trinitrophenylmethylnitramine Trinity Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language