Origin of muonmu + (mes)on
Origin of muonEarlier mu meson ( from the use of the Greek letter mu, the equivalent of the Roman letter m of MESON, to distinguish it from other mesons subsequently discovered, the class of particles to which it was formerly thought to belong )
See Table at subatomic particle
- An unstable elementary particle in the lepton family, having similar properties to the electron but with a mass 209 times greater.
Contraction of mu-meson (the particle has now been recategorised as a lepton).