therm
nounUK /θɜːm/
US /θɜːrm/
A therm is a unit used to measure heat energy.
The gas bill showed we used fifty therms last month.
SYNONYMS
RELATED WORDS
OTHER MEANINGS
2. A unit of heat equal to 100,000 British thermal units, used for measuring natural gas.
One therm of natural gas can heat a small home for a day.
3. A small unit of heat equal to about 105.5 megajoules.
The scientist measured the reaction's output in therms.
4. A former unit of heat used in early physics, roughly the heat needed to raise a ton of water by one degree Fahrenheit.
Old textbooks described the therm as a measure of warmth.