meson

noun
me·​son | \ ˈme-ˌzän How to pronounce meson (audio) , ˈme-ˌsän, ˈmā-ˌzän, ˈmā-ˌsän How to pronounce meson (audio) , ˈmē-ˌzän How to pronounce meson (audio) , ˈmē-ˌsän How to pronounce meson (audio) \

Definition of meson

: any of a group of fundamental particles (such as the pion and kaon) made up of a quark and an antiquark that are subject to the strong force and have zero or an integer number of quantum units of spin

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Other Words from meson

mesonic \ me-​ˈzä-​nik How to pronounce meson (audio) , me-​ˈsä-​ , mā-​ˈzä-​ , mā-​ˈsä-​ How to pronounce meson (audio) , mē-​ˈzä-​ , mē-​ˈsä-​ How to pronounce meson (audio) \ adjective

Examples of meson in a Sentence

Recent Examples on the Web The experiment also logs a smaller number of B meson decays ending with electrons. Quanta Magazine, "Growing Anomalies at the Large Hadron Collider Raise Hopes," 26 May 2020 All eyes are on the B meson, a yoked pair of quark particles. Quanta Magazine, "Growing Anomalies at the Large Hadron Collider Raise Hopes," 26 May 2020 The kaon, a special case of meson particle, is made of one quark and one antiquark. Caroline Delbert, Popular Mechanics, "Something Weird Just Happened That We Can't Really Explain With Existing Physics," 6 Mar. 2020 Each meson has a set of possible decay outcomes, and scientists have only recently begun to fully probe and explore the full range of what these possibilities are. Caroline Delbert, Popular Mechanics, "Something Weird Just Happened That We Can't Really Explain With Existing Physics," 6 Mar. 2020 And, as with complementary colors like blue and yellow, quarks pair with antiquarks to form colorless mesons. Quanta Magazine, "Quark Quartet Fuels Quantum Feud," 27 Aug. 2014 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, "Exotic particles called pentaquarks may be less weird than previously thought," 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, "Exotic particles called pentaquarks may be less weird than previously thought," 5 June 2019 But the rho meson turned out to be something of a special case, and the bootstrap method soon lost momentum. Quanta Magazine, "Physicists Uncover Geometric ‘Theory Space’," 23 Feb. 2017

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

1939, in the meaning defined above

History and Etymology for meson

International Scientific Vocabulary mes- + -on entry 2

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Time Traveler for meson

Time Traveler

The first known use of meson was in 1939

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Cite this Entry

“Meson.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/meson. Accessed 23 Jan. 2021.

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More Definitions for meson

meson

noun
me·​son | \ ˈmez-ˌän How to pronounce meson (audio) , ˈmēz- How to pronounce meson (audio) , ˈmēs-, ˈmes- \

Medical Definition of meson

: any of a group of unstable elementary particles that are subject to nuclear forces and have masses much greater than that of the electron

Other Words from meson

mesonic \ me-​ˈzän-​ik How to pronounce meson (audio) , mē-​ How to pronounce meson (audio) , -​ˈsän-​ \ adjective

More from Merriam-Webster on meson

Britannica.com: Encyclopedia article about meson

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