plural noun
Mu·​ta·​bil·​ia | \ ˌmyütəˈbilēə, -lyə\

Definition of Mutabilia

1 in former classifications : a suborder of Caudata comprising all salamanders that normally undergo metamorphosis
2 in some classifications : a suborder of Caudata including all true salamanders as opposed to the Proteida and Meantes

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History and Etymology for Mutabilia

New Latin, from Latin, neuter plural of mutabilis

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