EIGHTEENTH Meaning of EIGHTEENTH in English eighteenth BrE AmE ˌeɪ ˈtiːn t θ ◂ § ˌeɪt-, § ˌeɪt ˈiːn t θ ▷ eighteenth|s s▶ ˌ eighteenth ˈ century BrE AmE Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012