FRONTIER Meaning of FRONTIER in English frontier BrE AmE ˈfrʌnt ɪə ˈfrɒnt-; frʌn ˈtɪə AmE \ frʌn ˈtɪ ə r frɑːn- ▷ frontier|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012