SESQUIPEDALIAN Meaning of SESQUIPEDALIAN in English sesquipedalian BrE AmE ˌsesk wi pɪ ˈdeɪl i‿ən ◂ ˌ•wə-, -pəˈ•-, -peˈ•- ▷ sesquipedalian|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012