/ Dictionary / Index T trinitro-: Meaning and Definition of Find definitions for: trinitro- Pronunciation: [key] — Chem. Chem. a combination ofandtrinitrotoluene. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Trinitarianism trinitrobenzene Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language