dependencyyoudaoicibaDictYouDict[dependency 词源字典]
1590s (adj.), 1610s (n.); see dependent + -cy. Originally also dependancy, on the French model, but the Latinate form gradually pushed this into disuse; see -ance. Meaning "territory subordinate to another nation" is recorded from 1680s.[dependency etymology, dependency origin, 英语词源]