identification (n.)youdaoicibaDictYouDict[identification 词源字典]
1640s, "treating of a thing as the same as another," from French identification, probably from identifier (see identify). Sense of "becoming or feeling oneself one with another" is from 1857. Sense of "determination of identity" is from 1859. Meaning "object or document which marks identity" is from 1947 (short for identification tag, card, etc.).[identification etymology, identification origin, 英语词源]