bary·​on | \ ˈber-ē-ˌän How to pronounce baryon (audio) , ˈba-rē- \

Definition of baryon

: any of a group of subatomic particles (such as nucleons) that are subject to the strong force and are composed of three quarks

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Other Words from baryon

baryonic \ ˌber-​ē-​ˈä-​nik How to pronounce baryon (audio) , ˌba-​rē-​ \ adjective

Examples of baryon in a Sentence

Recent Examples on the Web Astronomers expected these hot baryons to conform to a cosmic superstructure, one made of invisible dark matter, that spanned the immense voids between galaxies. Quanta Magazine, 10 Sep. 2018 The lightest pentaquark has a mass just below the sum of a particular baryon and meson that together contain the correct quark ingredients. Adrian Cho, Science | AAAS, 5 June 2019 By a conventional Standard Model process, the antilepton excess would then have cascaded into a one-part-per-billion excess of baryons (protons and neutrons) over antibaryons. Quanta Magazine, 15 Oct. 2013 That suggests each pentaquark is just a baryon bound to a meson, with a tiny bit of mass taken up in binding energy. Adrian Cho, Science | AAAS, 5 June 2019 The heavier pentaquarks have masses just below the sum of the same baryon and a related meson with extra internal energy. Adrian Cho, Science | AAAS, 5 June 2019 In other words, the ratio of baryons, which include protons and neutrons, to photons, which light is made of, would have to shrink. Charles Q. Choi,, 26 Sep. 2018 Dark matter makes up about 27 percent of the universe, but scientists know little about it except that it’s not made of normal matter particles called baryons. Washington Post, 28 Feb. 2018 But by corralling huge numbers of baryons together, the people behind Super-Kamiokande hoped to spot one decaying much sooner, in just a few years. The Economist, 13 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'baryon.' 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 baryon

1953, in the meaning defined above

History and Etymology for baryon

Greek barýs "heavy" + -on entry 2 — more at grieve

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Learn More About baryon

Statistics for baryon

Cite this Entry

“Baryon.” Dictionary, Merriam-Webster, Accessed 20 Jun. 2021.

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