lepton
2lep·ton
noun \ˈlep-ˌtän\Definition of LEPTON
: any of a family of particles (as electrons, muons, and neutrinos) that have spin quantum number 1⁄2 and that experience no strong forces
— lep·ton·ic \lep-ˈtä-nik\ adjective
Origin of LEPTON
Greek leptos + English 2-on
First Known Use: circa 1929
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