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British Thermal Unit

noun

1 British thermal unit

A unit of heat equal to the amount of heat required to raise one pound of water one degree Fahrenheit at one atmosphere pressure; equivalent to 251.997 calories.

synonyms: B.Th.U., BTU.

Polish: BTU

Roget 382: heat, caloric; temperature, warmth, fervor, calidity; incalescence, incandescence; glow, flush; fever, hectic.    phlogiston; fire, ... show more


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