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British thermal unit

Syllabification: (Brit·ish ther·mal u·nit)
(abbreviation: Btu, BTU)
Definition of British thermal unit

noun

  • the amount of heat needed to raise one pound of water at maximum density through one degree Fahrenheit, equivalent to 1.055 × 103 joules.

British thermal unit in other Oxford dictionaries

Definition of British thermal unit in the British & World English dictionary
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