[ theer-ee-uh n ]
/ ˈθɪər i ən /


(in some classification systems) belonging or pertaining to the group Theria, comprising the marsupial and placental mammals and their extinct ancestors.


a therian animal.

Origin of therian

< New Latin Theri(a) name of the group (< Greek thēría, plural of thēríon wild beast) + -an Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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