abbr. (also B.t.u., BTU, B.Th.U.) British thermal unit(s).

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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
Syn: ↑British thermal unit, ↑BTU
Hypernyms: ↑work unit, ↑heat unit, ↑energy unit
Part Holonyms: ↑therm

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British. British thermal unit or units.

Useful english dictionary. 2012.

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