eta meson
noun Physics.
a neutral meson with strangeness 0 that is its own antiparticle. Symbol: η
Also called
eta particle.
Origin of eta meson
First recorded in 1960–65
Words nearby eta meson
et uxor,
et vir,
eta,
eta aquarids,
eta carinae,
eta meson,
eta particle,
eta-c meson,
eta-c particle,
etaerio,
etalon
Scientific definitions for eta particle
eta particle
[ ā′tə, ē′tə ]
An electrically neutral meson having a mass 1,071 times that of the electron and a mean lifetime of approximately 3.5 X 10-8 seconds. See Table at subatomic particle.