psi particle
[ sahy, psahy ]
/ saɪ, psaɪ /
noun Physics.
any of a family of mesons consisting of a charmed quark and a charmed antiquark.
an early name for the J/psi particle.
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Nearby words
pseudoxanthoma elasticum, psf, psg, pshaw, psi, psi particle, psi phenomenon, psia, psid, psig, psilanthropism
Origin of psi particle
First recorded in 1970–75
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for psi particle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Science definitions for psi particle (1 of 2)
psi particle
[ sī, psī ]
See J/psi particle.
Science definitions for psi particle (2 of 2)
psi′ particle
[ sī′prīm′, psī′- ]
An electrically neutral meson having a mass 7,213 times that of the electron and a mean lifetime of approximately 1 X 10-20 seconds, composed, like the J/psi particle, of a charm-anticharm quark pair. See Table at subatomic particle.
The American Heritage® Science Dictionary
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