BRITISH THERMAL UNIT


Meaning of BRITISH THERMAL UNIT in English

noun Date: 1876 the quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a specified temperature (as 39°F)

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.