British thermal unit

(redirected from BTHU)
Also found in: Thesaurus, Medical, Financial, Acronyms, Encyclopedia.

British thermal unit

n. Abbr. BTU or Btu
1. The quantity of heat required to raise the temperature of one pound of water from 60° to 61°F at a constant pressure of one atmosphere.
2. The quantity of heat equal to 1/180 of the heat required to raise the temperature of one pound of water from 32° to 212°F at a constant pressure of one atmosphere.

British thermal unit

n
(Units) a unit of heat in the fps system equal to the quantity of heat required to raise the temperature of 1 pound of water by 1°F. 1 British thermal unit is equivalent to 1055.06 joules or 251.997 calories. Abbrevs: btu or BThU

Brit′ish ther′mal u′nit


n.
the amount of heat required to raise the temperature of 1 lb. (0.4 kg) of water 1°F. Abbr.: Btu, BTU
[1875–80]

Brit·ish thermal unit

(brĭt′ĭsh)
The amount of heat that is needed to raise the temperature of one pound of water by one degree Fahrenheit. This unit is used mainly to measure heat, but it can be applied to other forms of energy.

British thermal unit

(BTU) The measure of heat needed to raise the temperature of one pound of water by 1° F. Equal to 252 calories.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.British thermal unit - a unit of heat equal to the amount of heat required to raise one pound of water one degree Fahrenheit at one atmosphere pressureBritish thermal unit - 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
energy unit, heat unit, work unit - a unit of measurement for work
therm - a unit of heat equal to 100,000 British thermal units