fermion

Definitions of fermion
  1. noun
    any particle that obeys Fermi-Dirac statistics and is subject to the Pauli exclusion principle
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    baryon, heavy particle
    any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1
    lepton
    an elementary particle that participates in weak interactions; has a baryon number of 0
    electron, negatron
    an elementary particle with negative charge
    hyperon
    any baryon that is not a nucleon; unstable particle with mass greater than a neutron
    mu-meson, muon, negative muon
    an elementary particle with a negative charge and a half-life of 2 microsecond; decays to electron and neutrino and antineutrino
    neutrino
    an elementary particle with zero charge and zero mass
    nucleon
    a constituent (proton or neutron) of an atomic nucleus
    tau-minus particle, tauon
    a lepton of very great mass
    type of:
    particle, subatomic particle
    a body having finite mass and internal structure but negligible dimensions
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