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WordReference Random House Unabridged Dictionary of American English © 2024therm (thûrm),USA pronunciation n. [Physics.]- Physicsany of several units of heat, as one equivalent to 1000 large calories or 100,000 British thermal units.
Also, therme. - Greek thérmē heat
- 1885–90
- var. of thermo- before a vowel:thermesthesia.
-therm, - var. of thermo- as final element in compound words:isotherm.
therm., - Physicsthermometer.
Collins Concise English Dictionary © HarperCollins Publishers:: therm /θɜːm/ n - Brit a unit of heat equal to 100 000 British thermal units. One therm is equal to 1.055 056 × 108 joules
Etymology: 19th Century: from Greek thermē heat -therm-, root. - -therm- comes from Greek, where it has the meaning "heat.'' This meaning is found in such words as: hypothermia, thermal, thermodynamics, thermometer, thermostat.
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