BTU

B3T1U1
/biː.tiː.juː/

A form of British thermal unit — A unit of energy that is equivalent to the quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a particular temperature (there are several different precise definitions) and a pressure of one atmosphere.

Similar
British thermal unitB.Th.U.
Less commonScrabble 5
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Meanings

BTU1

nounBTU (plural BTUs)

plural BTUs

  1. abbreviationinitialismbusinessInitialism of British thermal unit.

Btu2

symbol
  1. Alternative letter-case form of BTU (“British thermal unit”).

Synonyms & antonyms

nouna 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

Similar
British thermal unitB.Th.U.
Broader
work unitheat unitenergy unit
Also see
british thermal unit

Synonym sets from Open English WordNet, CC BY 4.0.

Rhymes & wordplay

Anagrams

buttub
Cite this entry
APA

BTU. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/BTU

MLA

“BTU.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/BTU. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “BTU,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/BTU.

Source: BTU on Wiktionary, CC BY-SA 4.0.