UNDIFFERENTIATED Meaning of UNDIFFERENTIATED in English undifferentiated BrE AmE ˌʌn ˌdɪf ə ˈren t ʃ i eɪt ɪd ◂ -əd AmE \ -eɪt̬- Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012