J/psi particle

noun \ˌjā-ˈsī-, -ˈpsī-\

Definition of J/PSI PARTICLE

:  an unstable neutral fundamental particle of the meson group that has a mass about 6000 times the mass of an electron —called also J particle, J/psi, psi particle

First Known Use of J/PSI PARTICLE



Next Word in the Dictionary: JPPPrevious Word in the Dictionary: JpnAll Words Near: J/psi particle
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears