appurtenance (n.)youdaoicibaDictYouDict[appurtenance 词源字典]
c. 1300, "right, privilege or possession subsidiary to a principal one," from Anglo-French apurtenance (12c.), Old French apartenance, present participle of apartenir "be related to," from Latin appertinere "to pertain to," from ad- "to" (see ad-) + pertinere "belong to" (see pertain).[appurtenance etymology, appurtenance origin, 英语词源]