Meaning | An elementary particle that participates in weak interactions; has a baryon number of 0. |
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Narrower | electron, negatron | An elementary particle with negative charge |
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muon, negative muon, mu-meson | An elementary particle with a negative charge and a half-life of 2 microsecond |

neutrino | An elementary particle with zero charge and zero mass |

tauon, tau-minus particle | A lepton of very great mass |

Broader | elementary particle, fundamental particle | (physics) a particle that is less complex than an atom |
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fermion | Any particle that obeys Fermi-Dirac statistics and is subject to the Pauli exclusion principle |

Spanish | leptón |
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Catalan | leptó |
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