/ Dictionary / Index T Thermit: Meaning and Definition of Find definitions for: Ther•mit Pronunciation: (thûr'mit), [key] — Trademark. Trademark. a brand of thermite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thermistor thermite Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language