/ Dictionary / Index T therm: Meaning and Definition of Find definitions for: therm Pronunciation: (thûrm), [key] — n. Physics. any of several units of heat, as one equivalent to 1000 large calories or 100,000 British thermal units. therm- Pronunciation: [key] var. ofbefore a vowel: thermesthesia. -therm Pronunciation: [key] var. ofas final element in compound words: isotherm. therm. Pronunciation: [key] thermometer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: therm (Thesaurus) theriomorphic Therma Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language