The ~ of something is the act or process of improving its standard or status. (FORMAL)
His research is for the ~ of mankind.
= improvement
N-UNCOUNT: oft N of n
The ~ of something is the act or process of improving its standard or status. (FORMAL)
His research is for the ~ of mankind.
= improvement
N-UNCOUNT: oft N of n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012