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British thermal unit

noun

Definition of British thermal unit

  1. :  the quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a specified temperature (as 39°F)



1876

First Known Use of british thermal unit

1876


Medical Dictionary

British thermal unit

noun

Medical Definition of British thermal unit

  1. :  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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