psi particle

[ sahy, psahy ]

noun

, Physics.

1. any of a family of mesons consisting of a charmed quark and a charmed antiquark.
2. an early name for the J/psi particle.

psi particle

noun

1. See J/psi particle

psi particle

/ sī,psī /

1. See J/psi particle

Word History and Origins

Origin of psi particle¹

First recorded in 1970–75