MASS Meaning of MASS in English mass common noun, verb, adjective BrE AmE mæs▷ massed mæst▷ masses ˈmæs ɪz -əz ▷ massing ˈmæs ɪŋ▶ ˌ mass ˈ media BrE AmE▶ ˌ mass pro ˈ duction BrE AmE Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012