SUPERSONIC Meaning of SUPERSONIC in English supersonic BrE AmE ˌsuːp ə ˈsɒn ɪk ◂ ˌsjuːp- AmE \ - ə r ˈsɑːn-▷ supersonic|ally ə l‿i▷ supersonic|s s Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012