POLYSYLLABIC Meaning of POLYSYLLABIC in English polysyllabic BrE AmE ˌpɒl i sɪ ˈlæb ɪk ◂ -səˈ•- AmE \ ˌpɑːl-▷ polysyllabic|ally ə l‿i Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012