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]
MarsupialiayoudaoicibaDictYouDict
"With plural concord. An order of mammals comprising forms which lack a complete placenta and give birth to very immature young which complete their development while attached to the mother's mammae, typically located in a protective abdominal pouch", Mid 19th cent.; earliest use found in Henry McMurtrie (1793–1865). From scientific Latin Marsupialia from post-classical Latin marsupialis + -a.