a mammal of an order whose members are born incompletely developed and are typically carried and suckled in a pouch on the mother's belly. Marsupials are found mainly in Australia and New Guinea, though three families, including the opossums, live in America 有袋(目)动物
Order Marsupialia and infraclass Metatheria, subclass Theria 有袋目,后哺乳下纲,兽亚纲
adjective
of or relating to this order (与)有袋目(有关)的
语源
late 17th cent. (in the sense 'resembling a pouch'): from modern Latin marsupialis, via Latin from Greek marsupion 'pouch' (see marsupium)