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quarkonium

[ kwawr-koh-nee-uhm, kwahr- ]

noun

, Physics.
  1. a meson composed of a quark and an antiquark of the same flavor.


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Word History and Origins

Origin of quarkonium1

1975–80; quark + -on 1 + -ium, on the model of positronium and similarly named particles

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quark modelquarks