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Definition of British thermal unit
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: B.th.u., Btu
Generic synonyms: Energy Unit, Heat Unit, Work Unit
Group relationships: Therm
Generic synonyms: Energy Unit, Heat Unit, Work Unit
Group relationships: Therm
Definition of British thermal unit
1. Noun. The quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a particular temperature (there are several different precise definitions) and a pressure of one atmosphere. ¹
¹ Source: wiktionary.com
Medical Definition of British thermal unit
1.
Lexicographical Neighbors of British Thermal Unit
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