Metatheria

 
Pronunciation: /ˌmɛtəˈθɪərɪə/

plural noun

Zoology
  • a group of mammals that comprises the marsupials. Compare with Eutheria.
    • Infraclass Metatheria, subclass Theria

Origin:

modern Latin (plural), from meta- (expressing change) + Greek thēria, plural of thērion 'wild animal'