muon

Definitions


[ˈmjuːɒn], (Noun)

Definitions:
- an unstable subatomic particle of the same class as an electron (a lepton), but with a mass around 200 times greater. Muons make up much of the cosmic radiation reaching the earth's surface


Phrases:

Origin:
1950s: contraction of mu-meson; the particle, however, is no longer regarded as a meson




definition by Oxford Dictionaries