RETRO- Meaning of RETRO- in English retro- BrE AmE ¦retr ə ʊ AmE -oʊ —formerly also ¦riːtr-▷ — retrobronchial ˌretr ə ʊ ˈbrɒŋk i‿əl ◂ AmE -oʊ ˈbrɑːŋk- Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012