fermion

Definitions of fermion

1. noun

   any particle that obeys Fermi-Dirac statistics and is subject to the Pauli exclusion principle
   types:

   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