NISI Meaning of NISI in English nisi BrE AmE ˈnaɪs aɪ ˈniːs i ▶ ˌ nisi ˈ prius ˈpra ɪ ‿əs ˈpri ː ‿əs BrE AmE Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012