muon
Noun. An unstable elementary particle in the lepton family, having similar properties to the electron but with a mass 209 times greater.This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.
This entry was last updated on RefTopia from its source on 3/20/2012.