Morpheme
Onium
Type
free base
Denotation
bound state of a particle and its antiparticle
Etymology
lexicalization of -onium, from positronium (<Positron + -ium>)
Evidence
beautonium, bottomonium, carbonium, charmonium, fluxonium, fluxoniums, gluonium, gluoniums, helionium, leptonium, leptoniums, mesonium, mesoniums, muononium, octetonium, onium, orthocharmonium, paracharmonium, positronium, quarkonium, quarkoniums, sbottomonium, squarkonium, strangeonium, tauonium, toponium, toponiums
