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quarkonium

American  
[kwawr-koh-nee-uhm, kwahr-] / kwɔrˈkoʊ ni əm, kwɑr- /

noun

Physics.

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

Etymology

Origin of quarkonium

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.