English edit

Etymology edit

Contraction of the earlier term mu-meson; the particle has now been recategorised as a lepton. Coined by Italian physicist Enrico Fermi in 1951 in his book Elementary Particles.

Pronunciation edit

  • IPA(key): /ˈmjuːɒn/
  • (file)
  • Rhymes: -uːɒn

Noun edit

muon (plural muons)

  1. (physics) An unstable elementary particle in the lepton family, having similar properties to the electron but with a mass 207 times greater.
    • 1951, Enrico Fermi, Elementary Particles:
      The μ-meson of Powell (called here muon) is instead a disintegration product of the pion, only weakly linked to the nucleons and therefore of little importance in the explanation of nuclear forces.
    • 1955 March, CP Sargent, “Diffusion Cloud-Chamber Study of Very Slow Mesons”, in Physical Review:
      The spectrum of electrons arising from the decay of the negative mu meson has been determined. The muons are arrested in the gas of a high pressure hydrogen filled diffusion cloud chamber.
    • 2023 August 11, Nicola Davis, “Scientists may be on brink of discovering fifth force of nature”, in The Guardian[1]:
      The data comes from experiments at the Fermilab US particle accelerator facility, which explored how subatomic particles called muons – similar to electrons but about 200 times heavier – move in a magnetic field.

Derived terms edit

Translations edit

Further reading edit

Anagrams edit

Dutch edit

Dutch Wikipedia has an article on:
Wikipedia nl

Etymology edit

Contraction of mu-meson

Pronunciation edit

  • (file)
  • Hyphenation: mu‧on

Noun edit

muon n (plural muonen)

  1. (physics) muon

Esperanto edit

Noun edit


  1. accusative singular of muo