charmonium

[ chahr-moh-nee-uhm ]

noun

, Physics.

1. any meson composed of a charmed quark and a charmed antiquark.

charmonium

/ tʃɑːˈməʊnɪəm /

noun

1. physics an elementary particle that contains an antiquark and a charm quark

Word History and Origins

Origin of charmonium¹

1970–75; charm ¹ + -onium, probably extracted from positronium

Word History and Origins

Origin of charmonium¹

C20: from charm (sense 7)