DEMONSTRATE Meaning of DEMONSTRATE in English demon|strate BrE AmE ˈdem ən |streɪt▷ demon|strated streɪt ɪd -əd AmE streɪt̬ əd▷ demon|strates streɪts▷ demon|strating streɪt ɪŋ AmE streɪt̬ ɪŋ Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012