meson

noun

me·son | \ ˈme-ˌzän

, ˈmā-

, ˈmē-

, -ˌsän

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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Then there are dozens of particles made up of those elementary particles, including hadrons, which are constructed of quarks and gluons, and mesons, made of a quark and anti-quark. — Jason Daley, Smithsonian, "The Large Hadron Collider Is Getting A Huge Power Boost," 19 June 2018 However, measurements at the CERN collider have shown a definite propensity for the mesons to underproduce muons, as reported at CERN in April. — Dennis Overbye, New York Times, "Yearning for New Physics at CERN, in a Post-Higgs Way," 19 June 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.