Definition of ketone in English:


Line breaks: ke¦tone
Pronunciation: /ˈkiːtəʊn


  • An organic compound containing a carbonyl group CO bonded to two hydrocarbon groups, made by oxidizing secondary alcohols. The simplest such compound is acetone.
    More example sentences
    • Low molecular weight aldehydes and ketones are soluble in water because the carbonyl oxygen atom allows the molecules to form strong hydrogen bonds with the molecules of water.
    • Over time, however, it oxidizes and chemically degrades to form alcohols, ketones, aldehydes, acids and esters.
    • In this reaction, an ester joins with another ester, a ketone, or a nitrile.



Pronunciation: /kɪˈtɒnɪk/
More example sentences
  • This type of reaction gives as its product a beta ketonic ester, ketone, or nitrile (depending upon the starting compounds) and an alcohol.


mid 19th century: from German Keton, alteration of Aketon 'acetone'.

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