Word Study
fermion
CIDE DICTIONARY
fermion, n.
any particle that obeys Fermi-Dirac statistcs and is subject to the Pauli exclusion principle. [WordNet 1.5]
OXFORD DICTIONARY
fermion, n. Physics any of several elementary particles with half-integral spin, e.g. nucleons (cf. BOSON).
Etymology
as FERMI + -ON
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