fermion

noun
fer·​mi·​on | \ ˈfer-mē-ˌän How to pronounce fermion (audio) , ˈfər-\

Definition of fermion

: a particle (such as an electron, proton, or neutron) whose spin quantum number is an odd multiple of ¹/₂ — compare boson

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Other Words from fermion

fermionic \ ˌfer-​mē-​ˈä-​nik How to pronounce fermionic (audio) , ˌfər-​ \ adjective

Examples of fermion in a Sentence

Recent Examples on the Web

The distant competitors include asymptotically safe gravity, E8 theory, noncommutative geometry and causal fermion systems. Quanta Magazine, "Why Is M-Theory the Leading Candidate for Theory of Everything?," 18 Dec. 2017 In the early 1970s several researchers independently proposed that bosons and fermions might be related to one another via a fundamental symmetry called supersymmetry. Philip Ball, Scientific American, "Supergravity Snags Super Award: $3-Million Special Breakthrough Prize," 6 Aug. 2019 Every species of quarticle is either a boson or fermion. Quanta Magazine, "Inside the Knotty World of ‘Anyon’ Particles," 28 Feb. 2017 Any two fermions that are within touching distance of each other must be different. Chris Lee, Ars Technica, "Bose Einstein condensate may reveal supersolid’s secrets," 28 Nov. 2018 The quasiparticles produced here, called Majorana fermions, are their own antimatter. Shannon Palus, Discover Magazine, "Electrons ‘Split’ in New Form of Matter," 22 Dec. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fermion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of fermion

1947, in the meaning defined above

History and Etymology for fermion

Enrico Fermi + English -on entry 2

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Statistics for fermion

Last Updated

15 Oct 2019

Look-up Popularity

Time Traveler for fermion

The first known use of fermion was in 1947

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More from Merriam-Webster on fermion

Rhyming Dictionary: Words that rhyme with fermion

Britannica.com: Encyclopedia article about fermion

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