eta meson
noun Physics.
a neutral meson with strangeness 0 that is its own antiparticle. Symbol: η
Nearby words
et uxor, et vir, eta, eta aquarids, eta carinae, eta meson, eta particle, eta-c meson, eta-c particle, etaerio, etalon
Origin of eta meson
First recorded in 1960–65
Also called eta particle.
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019