emigrate (v.)youdaoicibaDictYouDict[emigrate 词源字典]
1778, a back-formation from emigration, or else from Latin emigratus, past participle of emigrare "move away." In 19c. U.S., "to remove from one state to another state or territory." Related: Emigrated; emigrating.[emigrate etymology, emigrate origin, 英语词源]