British Thermal Unit Definition
brĭtĭsh
noun
A unit of heat equal to about 252 calories; quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit.
Webster's New World
The quantity of heat equal to1180 of the heat required to raise the temperature of one pound of water from 32° to 212°F at a constant pressure of one atmosphere.
American Heritage
Synonyms:
- B.Th.U.
- btu
Other Word Forms of British Thermal Unit
Noun
Singular:
British thermal unit
Plural:
british-thermal-units
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