resident (n.)youdaoicibaDictYouDict[resident 词源字典]
mid-15c., "an inhabitant, one who resides," from resident (adj.). Meaning "medical graduate in practice in a hospital as training" first attested 1892, American English.[resident etymology, resident origin, 英语词源]
resident (adj.)youdaoicibaDictYouDict
late 14c., "dwelling, residing," from Old French resident and directly from Latin residentem (nominative residens), present participle of residere "to sit down, settle" (see reside).