There are currently 2 astronomical definitions for the tag 'elementaryparticle'.
elementary particle
antiparticle, axion, baryon, boson, graviton, hadron, lepton, meson, neutrino, neutron, proton, photon, pion, quark
darkmatter, feynmandiagram, particleacceleration, particlecreation, particleescape, particleinteraction, particleproduction, plasma