二甲基胂酸 èrjiǎjīshènsuān cacodylic acid Origin Definitions Defs Strokes Stroke Words Sentences Sents 二 èr numeral two the number two; 2甲基 jiǎjī methyl the methyl group in chemistry胂 shèn arsine arsine (AsH3) or any of its organic derivatives where hydrogen atoms are replaced by hydrocarbon groups酸 suān noun acid acid, a chemical compound that releases hydrogen ions in water