(physics) An unstable elementary particle in the lepton family, having similar properties to the electron but with a mass 207 times greater.

plural of muon

A leptonic elementary particle having about half the mass of an electron and no charge.

plural of muon neutrino

(physics, chemistry) An exotic atom formed when a positively charged muon (an anti-muon) and an electron are bound by their mutual electrical attraction; chemically equivalent to a light, short-lived isotope of hydrogen.

plural of muonium

Pertaining to, or composed of muons

Without muons.

A minority group inhabiting the mountainous region of northern Vietnam.

Their language, related to Vietnamese.