J/psi particle
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.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
1977
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