marsupial (adj.)youdaoicibaDictYouDict[marsupial 词源字典]
1690s, with -al (1) + Modern Latin marsupialis "having a pouch," coined from Late Latin marsupium "pouch, purse" (Classical Latin marsuppium), from Greek marsipion, diminutive of marsipos "bag, pouch," of foreign, possibly oriental, origin. As a noun from 1805.[marsupial etymology, marsupial origin, 英语词源]