dislocation (n.)youdaoicibaDictYouDict[dislocation 词源字典]
c. 1400, originally of bones, from Old French dislocacion (14c.), or directly from Medieval Latin dislocationem (nominative dislocatio), noun of action from past participle stem of dislocare (see dislocate). General sense is from c. 1600.[dislocation etymology, dislocation origin, 英语词源]