Synonyms for Neutron:

n.

atomic, atom, atomic number, atomic mass, chain, anion, atomic weight, cation. subatomic particle (noun)
meson, mesotron, positron, muon, alpha particle, beta particle, proton, antiparticle, electron, subatomic particle, pion, neutrino, photon.

Other synonyms:

Other relevant words:
atom, cation, atomic, anion, chain.