First Known Use: 1962
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
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