COEXTENSIVE Meaning of COEXTENSIVE in English coextensive BrE AmE ˌkəʊ ɪk ˈsten t s ɪv -ek-, -ək- AmE \ ˌkoʊ-▷ coextensive|ly li▷ coextensive|ness nəs nɪs Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012