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chi meson

[kahy]
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noun Physics.
  1. a meson with a mass 6687 times that of the electron and a mean lifetime of approximately 1.5 X 10-20 seconds.
Also called chi particle.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
chi particle in Science

chi particle

[kī, kē]
  1. An electrically neutral meson having a mass 6,687 times that of the electron and a mean lifetime of approximately 1.5 X 10-20 seconds. See Table at subatomic particle.
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