/ ˌprəʊlɒŋˈgeɪʃn; NAmE ˌproʊlɔːŋ-; -lɑːŋ-/ noun
[ U , sing. ] ( formal ) the act of making sth last longer :
the artificial prolongation of human life
/ ˌprəʊlɒŋˈgeɪʃn; NAmE ˌproʊlɔːŋ-; -lɑːŋ-/ noun
[ U , sing. ] ( formal ) the act of making sth last longer :
the artificial prolongation of human life
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005