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Related to fermion: boson, quark


 (fûr′mē-ŏn′, fĕr′-)
Any of a class of particles having a spin that is half an odd integer and obeying the exclusion principle, by which no more than one identical particle may occupy the same quantum state. The fermions include the baryons, quarks, and leptons.

[After Enrico Fermi.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Nuclear Physics) any of a group of elementary particles, such as a nucleon, that has half-integral spin and obeys Fermi-Dirac statistics. Compare boson
[C20: named after Enrico Fermi; see -on]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈfɜr miˌɒn, ˈfɛər-)

any elementary particle, as a neutron, proton, or electron, that is subject to the exclusion principle and whose spin is half an odd integer: ½, 3/2, etc.
[1945–50; fermi + (mes) on]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.fermion - any particle that obeys Fermi-Dirac statistics and is subject to the Pauli exclusion principle
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
subatomic particle, particle - a body having finite mass and internal structure but negligible dimensions
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Spinors on Singular Spaces and the Topology of Casual Fermion Systems
The study deduced that the neutrino oscillation and confinement of quarks divulge the presence of a conceptual significance in the development of general fermion equation.
Liisa Hurme, SVP, Specialty Products and Fermion, will take the responsibility for Supply Chain line function.
Specifically, they are a type of fermion -- particles that are technically categorised as possessing a half spin.
Since the l twist disclination is a massless fermion, this leads us to identify the l twist disclination with the neutrino.
The Fermi operator [[psi].sup.[dagger].sub.i,[sigma]] = (1/N)[[summation].sub.k] exp(-1k.[r.sub.i])[[psi].sup.[dagger].sub.k,[sigma]] ([[psi].sub.i,[sigma]] = (1/N) [[summation].sub.k] exp(-k.[r.sub.i])[[psi].sub.[dagger].sub.k,[sigma]]) creates (destroys) a fermion on the lattice site [r.sub.i] with pseudospin projection [sigma].
To obtain the Hamilton-Jacobi equation for a fermion, the ansatz for [psi] is assumed as
describing the transformation properties of each fermion
On the other hand, the experimental realization of quantum degeneracy in trapped atomic Fermi gases [7-11] triggered a renewed interest, over the last fifteen years, in the study not only of interacting fermion systems [12-15] but also of trapped ideal ones [16-34].
Abstract: Silicene is a monolayer allotrope of silicon atoms arranged in a honeycomb structure with massless Dirac fermion characteristics similar to graphene.
Fermion provides synthesis development and process engineering, analytical development and testing, scale-up, validation, and lab-to-commercial-scale production services providing customers with fully automated, best-in-class facilities combined with advanced particle engineering, impurity control and HPAPI production capabilities.