QUADRILINGUAL Meaning of QUADRILINGUAL in English quadrilingual BrE AmE ˌkwɒdr ɪ ˈlɪŋ ɡwəl ◂ -ə- AmE \ ˌkwɑːdr-▷ quadrilingual|ly i▷ quadrilingual|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012