DIAPHONEMIC Meaning of DIAPHONEMIC in English diaphonemic BrE AmE ˌda ɪ ‿ə fə ʊ ˈniːm ɪk AmE \ -fəˈ•-▷ diaphonemic|ally ə l‿i Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012