 british_thermal_unit |
||
| 1. | [ noun ] (physics) 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 | |
| Synonyms: | B.Th.U. Btu | |
| Related terms: | work_unit therm | |
| Similar spelling: |
British_monetary_unit British_capacity_unit british_imperial_system |
|
