https://www.oxfordlearnersdictionaries.com/definition/english/btu https://www.oxfordlearnersdictionaries.com/definition/englis... > British thermal unit (the a

https://www.oxfordlearnersdictionaries.com/definition/english/btu https://www.oxfordlearnersdictionaries.com/definition/englis... > British thermal unit (the amount of heat needed to raise one pound of water by one degree Fahrenheit, equal to 1.055 x 103 joules)