Theria
plural nounDefinition of Theria
(Entry 1 of 2)
: a subclass of Mammalia comprising the higher mammals and including the Pantotheria, Metatheria, and Eutheria and excluding the Prototheria and Allotheria
-theria
noun combining formDefinition of -theria (Entry 2 of 2)
: beasts : animals —in names of higher taxa of mammalian forms Prototheria
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