Dictionary

therian

noun the·ri·an \ˈthir-ē-ən\

Definition of THERIAN

:  any of a subclass (Theria) of mammals comprising the marsupials and the placental mammals
therian adjective
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Origin of THERIAN

New Latin Theria, from Greek thēria, plural of therion wild animal — more at treacle
First Known Use: 1962

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