From anti- + muonium. <span class="searchmatch">antimuonium</span> (uncountable) (particle physics) The antimatter form of muonium...
antilepton antimatter antiparticle lepton lepton family antimuon neutrino <span class="searchmatch">antimuonium</span> antimuon neutrino muonium muon neutrino muononium antiparticle Mountain...