polydactyl (n.)youdaoicibaDictYouDict[polydactyl 词源字典]
1894, from French polydactyle (adj.) "having more fingers and toes than is usual," from Greek polydaktylos; see poly- + dactyl. As an adjective from 1874. Related: Polydactyly; polydactylism (1868).[polydactyl etymology, polydactyl origin, 英语词源]