meson

Meaning

Noun

  • The mesial plane dividing the body into similar right and left halves.
  • A member of a group of subatomic particles having a mass intermediate between electrons and protons. (The most easily detected mesons fit this definition.)
  • An elementary particle that is composed of a quark and an antiquark, such as a kaon or pion. (Mesons composed of rarer quarks are much heavier.)

Related

Similar words

Narrower meaning words

  • scalar meson
  • vector meson

Broader meaning words

Origin

  • From Ancient Greek μέσον.
  • From meso- + on. , as a modification of the earlier suggestion mesotron.

Modern English dictionary

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