Dictionary
British thermal unit
noun
Definition of BRITISH THERMAL UNIT
: the quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a specified temperature (as 39°F)
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First Known Use of BRITISH THERMAL UNIT
1876
Medical Dictionary
British thermal unit
noun
Medical Definition of BRITISH THERMAL UNIT
: the quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a specified temperature (as 39°F)—abbreviation Btu
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