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

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 This oscillation proves that charm meson particles can alternate between states of matter and antimatter. Caroline Delbert And Courtney Linder, Popular Mechanics, 29 July 2021 For example, a meson could consist of a red and an antired quark. Elizabeth Fernandez, Forbes, 19 Sep. 2021 The secret lies in an elusive, unstable particle called a B meson, which isn’t biodegrading according to plan. Caroline Delbert, Popular Mechanics, 23 Mar. 2021 That is, a rare decay of a B meson does not directly yield new particles—muons and kaons are old hat—but the rate at which the decay happens can depend on heavy, as-yet-unseen particles influencing the outcome behind the scenes. Daniel Garisto, Scientific American, 25 Mar. 2021 During particle runs at LHC as part of the LHCb experimental team, the physicists scrutinized the rarest occurring B meson decays. Caroline Delbert, Popular Mechanics, 23 Mar. 2021 The experiment also logs a smaller number of B meson decays ending with electrons. Quanta Magazine, 26 May 2020 All eyes are on the B meson, a yoked pair of quark particles. Quanta Magazine, 26 May 2020 The kaon, a special case of meson particle, is made of one quark and one antiquark. Caroline Delbert, Popular Mechanics, 6 Mar. 2020 See More

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.

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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Cite this Entry

“Meson.” Dictionary, Merriam-Webster, Accessed 23 May. 2022.

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More Definitions for meson


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

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