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Definition of B.Th.U.
1. Noun. 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.
Exact synonyms: British Thermal Unit, Btu
Generic synonyms: Energy Unit, Heat Unit, Work Unit
Group relationships: Therm
Generic synonyms: Energy Unit, Heat Unit, Work Unit
Group relationships: Therm
Lexicographical Neighbors of B.Th.U.
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