ke·tone (k t n )n. Any of a class of organic compounds, such as acetone, having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals and having the general formula R(CO)R  , where R may be the same as R  .
[German Keton, shortening and alteration of Aceton, acetone : Latin ac tum, vinegar; see acetum + German -on, n. suff. (alteration of -en, from Greek - n ).]
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ketone [kee-tone] Noun
Chem any of a class of compounds with the general formula R´COR, where R and R´ are alkyl or aryl groups [German Keton, from Aketon acetone]
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| Noun | 1. | ketone - any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicalsClinoril, sulindac - a nonsteroidal anti-inflammatory drug (trade name Clinoril) acetone, dimethyl ketone, propanone - the simplest ketone; a highly inflammable liquid widely used as an organic solvent and as material for making plastics butanone, methyl ethyl ketone - colorless soluble flammable liquid ketone used as a solvent for resins and as a paint remover and in lacquers and cements and adhesives and cleaning fluids and celluloid flavin - a ketone that forms the nucleus of certain natural yellow pigments like riboflavin acetone body, ketone body - a ketone that is an intermediate product of the breakdown of fats in the body; any of three compounds (acetoacetic acid, acetone, and/or beta-hydroxybutyric acid) found in excess in blood and urine of persons with metabolic disorders |