PROPOSITION Meaning of PROPOSITION in English proposition BrE AmE ˌprɒp ə ˈzɪʃ ə n AmE \ ˌprɑːp-▷ proposition|ed d▷ proposition|ing ‿ɪŋ▷ proposition|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012