PROLONG Meaning of PROLONG in English prolong BrE AmE prə ʊ ˈlɒŋ AmE \ prə ˈlɔːŋ -ˈlɑːŋ ▷ prolong|ed d▷ prolong|ing ɪŋ▷ prolong|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012