an organic chemical compound containing the carbonyl group, CO, in combination with two hydrocarbon radicals
Origin of ketoneGerman keton, arbitrary variant, variety of French acétone: see acetone
Any of a class of organic compounds, such as acetone, characterized by having a carbonyl group in which the carbon atom is bonded to two other hydrocarbon groups and having the general formula R(CO)R′, where R may be the same as R′.
Origin of ketoneGerman Keton, shortening and alteration of Aceton, acetone : Latin ac&emacron;tum, vinegar; see acetum + German -on, n. suff. (alteration of -en, from Greek -&emacron;n&emacron;).