NIKKEI Meaning of NIKKEI in English Nikkei BrE AmE nɪ ˈkeɪ ˈniːk eɪ AmE ˈniːk eɪ —Japanese [ ɲik ˌkei, -ˌkee \] Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012