J/psi particle

noun
\ ˌjā-ˈsī- How to pronounce J/psi particle (audio) , -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, in the meaning defined above

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The first known use of J/psi particle was in 1977

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Dictionary Entries Near J/psi particle

JPP

J/psi particle

Jr

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Statistics for J/psi particle

Cite this Entry

“J/psi particle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/J%2Fpsi%20particle. Accessed 19 Jan. 2022.

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