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J particle

noun, Physics.
1.
an early name for the J/psi particle.
Origin
1970-1975
1970-75; named by S.C.C. Ting, allegedly from the resemblance of the letter J to the Chinese character for Ting
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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j-particle in Science
J particle  
See J/psi particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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