J/psi particle

noun

ˌjā-ˈsī- How to pronounce J/psi particle (audio)
-ˈpsī-
: 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

Word History

First Known Use

1977, in the meaning defined above

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

Dictionary Entries Near J/psi particle

JPP

J/psi particle

Jr

Cite this Entry

“J/psi particle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/J%2Fpsi%20particle. Accessed 5 Jun. 2023.

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