PRO Meaning of PRO in English I PRO initials BrE AmE ˌpiː ɑː r ˈəʊ AmE -ɑːr ˈoʊ▷ PRO|s, ~'s z II PRO grammatical term BrE AmE prəʊ AmE \ proʊ Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012