deja vuyoudaoicibaDictYouDict[deja vu 词源字典]
1903, from French déjà vu, literally "already seen." The phenomenon also is known as promnesia. Similar phenomena are déjà entendu "already heard" (of music, etc.), 1965; and déjà lu "already read."[deja vu etymology, deja vu origin, 英语词源]