iconyoudaoicibaDictYouDict[icon 词源字典]
icon: [16] The etymological idea underlying icon is of ‘similarity’. It comes via Latin īcōn from Greek eikón, which was derived from a prehistoric base meaning ‘be like’. From ‘likeness, similarity’, eikón progressed semantically via ‘image’ to ‘portrait, picture’. That was the general sense in which English acquired the word (‘The Icon, or forme of the same birde, I have caused thus to bee figured’, John Bossewell, Workes of Armorie 1572), and it was not until the early 19th century that the particular application to a ‘sacred portrait in the Eastern Orthodox church’ entered the language.
[icon etymology, icon origin, 英语词源]
icon (n.)youdaoicibaDictYouDict
also ikon, 1570s, "image, figure, representation," from Late Latin icon, from Greek eikon "likeness, image, portrait," related to eikenai "be like, look like," of unknown origin. Eastern Church sense is attested from 1833. Computing sense first recorded 1982.