a former Greek monetary unit worth one hundredth of a drachma
2.
a small coin of ancient Greece
Word origin
from Greek lepton (nomisma) small (coin)
lepton in British English2
(ˈlɛptɒn)
noun
physics
any of a group of elementary particles and their antiparticles, such as an electron, muon, or neutrino, that participate in electromagnetic and weak interactions and have a half-integral spin
Derived forms
leptonic (lepˈtonic)
adjective
Word origin
C20: from lepto- + -on
lepton in American English1
(ˈlɛpˌtɑn)
nounWord forms: pluralˈlepta (ˈlɛptə)
1.
a small coin of ancient Greece
2.
a former monetary unit of modern Greece, equal to 1⁄100 of a drachma
Word origin
Gr < leptos, thin, small < lepein, to peel: see leper
lepton in American English2
(ˈlɛpˌtɑn)
noun
Particle Physics
any of a class of fermions subject to the weak interaction but not the strong interaction, as the electron, neutrino, muon, or tau particle