Standard Lemma guide

ketone

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˈkiːtəʊn/
  • General-American: /ˈkitoʊn/
  • UK: Recorded audio is listed in the source snapshot.
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -iːtəʊn
  • CMU ARPABET: K IY1 T OW0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A homologous series of organic molecules whose functional group is an oxygen atom joined to a carbon atom—by a double bond—in a carbon-hydrogen based molecule.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

Examples

  • acetone R1 = R2 = CH3
  • methyl ethyl ketone R1 = CH3, R2 = C2H5
  • camphor C10H17O

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: organic compound

Narrower terms: acetone, propanone, dimethyl ketone, butanone, methyl ethyl ketone, flavin, ketone body, acetone body

History

Etymology

From German Keton, from Aketon (“acetone”), from French acétone (“acetone”). See acetone.

Across languages

Translations

35 source translations are retained for this English entry.

  • Bulgarian: кетон (keton) — organic chemicals with the >CO functional group
  • Catalan: cetona — organic chemicals with the >CO functional group
  • Chinese Cantonese: 酮 (tung4) — organic chemicals with the >CO functional group
  • Chinese Mandarin: 酮 (tóng) — organic chemicals with the >CO functional group
  • Danish: keton — organic chemicals with the >CO functional group
  • Dutch: keton — organic chemicals with the >CO functional group
  • Esperanto: ketono — organic chemicals with the >CO functional group
  • Finnish: ketoni — organic chemicals with the >CO functional group
  • French: cétone — organic chemicals with the >CO functional group
  • Galician: cetona — organic chemicals with the >CO functional group
  • German: Keton — organic chemicals with the >CO functional group
  • Greek: κετόνη (ketóni) — organic chemicals with the >CO functional group
  • Hungarian: keton — organic chemicals with the >CO functional group
  • Ido: ketono — organic chemicals with the >CO functional group
  • Irish: céatón — organic chemicals with the >CO functional group
  • Italian: chetone — organic chemicals with the >CO functional group
  • Japanese: ケトン (keton) — organic chemicals with the >CO functional group
  • Khmer: សេតូន (seetoun) — organic chemicals with the >CO functional group
  • Korean: 케톤 (keton) — organic chemicals with the >CO functional group
  • Malay: keton — organic chemicals with the >CO functional group
  • Māori: hāparo — organic chemicals with the >CO functional group
  • Norwegian Bokmål: keton — organic chemicals with the >CO functional group
  • Norwegian Nynorsk: keton — organic chemicals with the >CO functional group
  • Persian: کتون (keton) — organic chemicals with the >CO functional group
  • Polish: keton — organic chemicals with the >CO functional group
  • Portuguese: cetona — organic chemicals with the >CO functional group
  • Romanian: cetonă — organic chemicals with the >CO functional group
  • Russian: кето́н (ketón) — organic chemicals with the >CO functional group
  • Slovak: ketón — organic chemicals with the >CO functional group
  • Spanish: cetona — organic chemicals with the >CO functional group
  • Spanish: quetona — organic chemicals with the >CO functional group
  • Swedish: keton — organic chemicals with the >CO functional group
  • Turkish: keton — organic chemicals with the >CO functional group
  • Vietnamese: xeton — organic chemicals with the >CO functional group
  • Vietnamese: xê-tôn — organic chemicals with the >CO functional group
Real reading context

ketone in complete knowledge articles

Ketone Science & nature · Advanced · 33 uses