SUPERTONIC Meaning of SUPERTONIC in English supertonic BrE AmE ˌsuːp ə ˈtɒn ɪk ◂ ˌsjuːp-, ˈ••ˌ•• AmE \ - ə r ˈtɑːn-▷ supertonic|s s Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012