dependence (n.)youdaoicibaDictYouDict[dependence 词源字典]
early 15c., from Middle French dépendance, from dependre (see depend). Originally also dependance (the earlier form), depending whether the writer had French or Latin foremost in mind; the Latin form gradually predominated and after c. 1800 dependance is rare. As an adjective from c. 1600.[dependence etymology, dependence origin, 英语词源]