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quarkonium

 - 1 dictionary result

quar⋅ko⋅ni⋅um

[kwawr-koh-nee-uhm, kwahr-]
–noun Physics.
a meson composed of a quark and an antiquark of the same flavor.

Origin:
1975–80; quark + -on 1 + -ium, on the model of positronium and similarly named particles
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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