Standard Lemma guide

kaon

noun · 3 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

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  • /ˈkeɪˌɑn/

1

noun

Meaning 1

any of four unstable subatomic particles, mesons, they are a combination of a strange quark or antiquark and either an up or down quark or antiquark

Definition source: English Wiktionary via Wiktextract

Usage: particle

Topics: natural-sciences, physical-sciences, physics

Examples

  • K0: strange quark + down antiquark
  • K (antiparticle of K0): down quark + strange antiquark
  • K+: strange quark + up antiquark
  • K− (antiparticle of K+): up quark + strange antiquark

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Acronym of Karlsruhe ontology.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, acronym, alt-of

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

an unstable meson produced as the result of a high-energy particle collision

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: kappa-meson, k-meson, K particle

Antonyms: none provided

Broader terms: meson, mesotron

History

Etymology

From contracted pronunciation of K-meson.

Across languages

Translations

12 source translations are retained for this English entry.

  • Catalan: kaó — K-meson
  • Dutch: kaon — K-meson
  • Finnish: kaoni — K-meson
  • French: kaon — K-meson
  • German: Kaon — K-meson
  • Italian: kaone — K-meson
  • Khmer: កាណូ (ka no) — K-meson
  • Polish: kaon — K-meson
  • Portuguese: káon — K-meson
  • Russian: као́н (kaón) — K-meson
  • Swedish: kaon — K-meson
  • Swedish: K-meson — K-meson