<p><strong>Noun</strong></p><ul><li>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.</li></ul><p><strong>Adjective</strong></p><ul><li>Pertaining to, resembling, or having a marsupium.</li><li>Of or relating to the marsupials.</li></ul>