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Fermion

//ˈfɜːmɪɒn// noun

Definitions

Noun
  1. 1
    Any elementary or composite particle that has half-integer spin and thus obeys Fermi–Dirac statistics and the Pauli exclusion principle (equivalently, a particle for which the wavefunction of any system of identical such particles changes sign whenever two are swapped); a baryon, a lepton or a quark; particle

    "The fermions treated by the Standard Model are the (composite) baryons and the (elementary) leptons and quarks."

  2. 2
    any particle that obeys Fermi-Dirac statistics and is subject to the Pauli exclusion principle wordnet
  3. 3
    Any elementary or composite particle that has half-integer spin and thus obeys Fermi–Dirac statistics and the Pauli exclusion principle (equivalently, a particle for which the wavefunction of any system of identical such particles changes sign whenever two are swapped); a baryon, a lepton or a quark; (slightly more loosely) any such particle or any composite particle composed of fermions.; any such particle or any composite particle composed of fermions. particle

Etymology

From Fermi + -on. Named after Italian-American physicist Enrico Fermi. Coined by English physicist Paul Dirac in 1945 in a lecture titled "Developments in Atomic Theory".

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