- IPA: /ˈlɛptɒn/
lepton (plural lepta)
- A coin used since ancient times in Greece, serving in modern times as one hundredth of a phoenix, a drachma, and a euro (as the Greek form of the Eurocent).
- A small, bronze Judean coin from the 1st century BCE, considered by some to be the widow's mite.
lepton (plural leptons)
- (particle physics) An elementary particle that has a spin of 1/2 (i.e., is a fermion) and does not interact via the strong nuclear force; examples include the electron, the muon, the neutrino and the tauon.
- French: lepton
- German: Lepton
- Italian: leptone
- Portuguese: leptão (Portugal), lépton (Brazil)
- Russian: лепто́н
- Spanish: leptón