Definition of Theria in English:

Theria

plural noun

Zoology
  • A major group of mammals that comprises the marsupials and placentals.

    Compare with Prototheria
    • ‘It is therefore puzzling that such adaptations appear to have a limited distribution within the Theria.’

Origin

Modern Latin (plural), from Greek thēria wild animals.

Pronunciation:

Theria

/ˈθɪərɪə/