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therian

[theer-ee-uh n] /ˈθɪər i ən/
adjective
1.
(in some classification systems) belonging or pertaining to the group Theria, comprising the marsupial and placental mammals and their extinct ancestors.
noun
2.
a therian animal.
Origin of therian
< New Latin Theri(a) name of the group (< Greek thēría, plural of thēríon wild beast) + -an
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Based on the Random House Dictionary, © Random House, Inc. 2018.
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adjective

pertaining to placental or marsupial mammals

Word Origin

Theria (from Greek themacrion 'beast', one the subclasses of Mammalia

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