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noun, Physics.
a scheme that explains the quantum numbers of all the baryons and mesons by assuming that baryons are composed of three quarks and mesons of a quark and an antiquark, with different combinations of quark and antiquark flavors giving different sets of quantum numbers.


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  • Quarkonium

    [kwawr-koh-nee-uh m, kwahr-] /kwɔrˈkoʊ ni əm, kwɑr-/ noun, Physics. 1. a meson composed of a quark and an antiquark of the same flavor.

  • Quarks

    [kwawrk, kwahrk] /kwɔrk, kwɑrk/ noun 1. Physics. any of the hypothetical particles with spin 1/2, baryon number 1/3, and electric charge 1/3 or −2/3 that, together with their antiparticles, are believed to constitute all the elementary particles classed as baryons and mesons; they are distinguished by their flavors, designated as up (u), down (d), strange […]

  • Quark-star

    noun, Astronomy. 1. a hypothetical celestial object that is intermediate in density between a neutron star and a black hole, possibly the remnant of a massive neutron star with all particles reduced to strange quarks. quark star A superdense celestial object that is formed when the remnants of old stars collapse on themselves, denser than […]

  • Quarles

    [kwawrlz, kwahrlz] /kwɔrlz, kwɑrlz/ noun 1. Francis, 1592–1644, English poet. /kwɔːlz; kwɑːlz/ noun 1. Francis. 1592–1644, English poet

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