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| 1. | any viviparous, nonplacental mammal of the order Marsupialia, comprising the opossums, kangaroos, wombats, and bandicoots, the females of most species having a marsupium containing the mammary glands and serving as a receptacle for the young. |
| 2. | pertaining to, resembling, or having a marsupium. |
| 3. | of or pertaining to the marsupials. |