ケトン基きMeanings1nounketone groupIn organic chemistry, the functional group consisting of a carbonyl group (C=O) bonded to two carbon atoms.アセトンはケトン基きを持もつ最もっとも簡かん単たんな化か合ごう物ぶつの一ひとつです。Acetone is one of the simplest compounds that has a ketone group.