assessor (n.)youdaoicibaDictYouDict[assessor 词源字典]
late 14c., from Old French assessor "assistant judge, assessor (in court)" (12c., Modern French assesseur) and directly from Latin assessor "an assistant, aid; an assistant judge," in Late Latin "one who assesses taxes," literally "a sitter-by," agent noun from past participle stem of assidere "to sit beside" (see assess).[assessor etymology, assessor origin, 英语词源]