ascendancy(also ascendency), / əˈsendənsɪ; ə`sɛndənsɪ/ n [U]~ (over sb/sth) (position of) having dominant power or control 有支配的力量或控制力(的地位) He has (gained) the ascendancy over all his main rivals. 他(获)有压倒一切主要对手的优势.
牛津英汉双解词典