焦耳 jiāo'ěr joule Origin Definitions Defs Strokes Stroke Words Sentences Sents jiāo'ěr joule 焦 jiāo joule joule (unit of energy)耳 ěr surname a Chinese surnamejiāo'ěr James Prescott Joule 焦 jiāo Jiao a surname耳 ěr surname a Chinese surname