agathodemonyoudaoicibaDictYouDict[agathodemon 词源字典]
"A beneficent spirit or divinity, especially one manifested or depicted as a serpent or dragon", Mid 18th cent.; earliest use found in Thomas Shaw (1694–1751), traveller. From (i) post-classical Latin agathodaemon kind of Egyptian serpent.[agathodemon etymology, agathodemon origin, 英语词源]