supersymmetry Syllabification: (su·per·sym·me·try)Pronunciation: /ˈso͞opərˌsimitrē/Definition of supersymmetry noun Physics a very general type of mathematical symmetry that relates fermions and bosons. Derivatives supersymmetricPronunciation: /-siˈmetrik/ adjective supersymmetry in other Oxford dictionaries Definition of supersymmetry in the British & World English dictionary