omega meson

omega meson

noun Physics.
a neutral and extremely short-lived meson having a mass 1532 times that of the electron and a mean lifetime of 6.6 X 10 -23 seconds.
Also called omega.
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American Heritage
Science Dictionary
omega meson  
A neutral meson having a mass 1,532 times that of the electron and an average lifetime of 6.6 × 10-23 seconds. See Table at subatomic particle.
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