| NOUN | quantity | BTU, British thermal unit, B.Th.U. | a unit of heat equal to the amount of heat required to raise one pound of water one degree Fahrenheit at one atmosphere pressure |
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| Meaning | 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. | |
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| Synonyms | British thermal unit, B.Th.U. | |
| Part of | therm | A unit of heat equal to 100,000 British thermal units |
| Broader | work unit, heat unit, energy unit | A unit of measurement for work |
| Spanish | British thermal unit, Btu, BTU, termia británica | |
| Catalan | BTU, tèrmia britànica | |
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