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1. A member of the order Marsupalia, which includes such mammals as kangaroos, wombats, bandicoots, and opossums, the female of which has an abdominal pouch for carrying the young.
2. Of or pertaining to marsupials.
[L. marsupium, a pouch]
Any of various nonplacental mammals of the infraclass Metatheria, including kangaroos, opossums, bandicoots, and wombats, found principally in Australia and the Americas, and typically bearing young that suckle and develop after birth in the mother's pouch. These species were formerly placed in the order Marsupialia.
1. Of or belonging to the infraclass Metatheria.
2. Relating to or having a marsupium.
marsupialadjective Referring to a pouch.
noun Any pouched mammal of the order Marsupialia.
marsupialany member of the subclass Marsupialia (also called Didelphia or Metatheria) containing mammals characterized by the absence of a placenta and the presence of a pouch to which the young, born in an undeveloped state, migrate during early development. The pouch contains the mammary glands, which vary in number between species, and the young complete their development here. The group was at one time widespread, but now is restricted to Australasia and South America. In Australasia, marsupials, free from competition from EUTHERIAN (placental) mammals, have radiated to occupy most niches elsewhere occupied by placental forms.
an animal member of the order Marsupiala, infraclass Metatheria, which produces viviparous young by hatching eggs internally. The bean-sized fetus is transferred to the characteristic marsupial pouch on the anterior abdomen with its mammary gland and reared there. Two monotremes, the platypus and the spiny anteater, lay and hatch eggs and rear the young, the latter in rudimentary marsupial pouches.