antisymmetric Syllabification: (an·ti·sym·met·ric)Pronunciation: /ˌantēsəˈmetrik, ˌantī-/Definition of antisymmetric adjective Mathematics & Physics unaltered in magnitude but changed in sign by exchange of two variables or by a particular symmetry operation. antisymmetric in other Oxford dictionaries Definition of antisymmetric in the British & World English dictionary