SEMPITERNAL Meaning of SEMPITERNAL in English sempiternal BrE AmE ˌsemp ɪ ˈtɜːn ə l ◂ -ə- AmE \ -ˈtɝːn ə l ◂▷ sempiternal|ly i Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012