Metatheria

plural noun
Meta·​the·​ria

Definition of Metatheria

1 : a hypothetical group ancestral to placental mammals postulated to have reached a stage of development equivalent to that of the marsupials
2 in some classifications : a group coextensive with Marsupialia

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History and Etymology for Metatheria

New Latin, from meta- + -theria

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Dictionary Entries Near Metatheria

metatheory

Metatheria

metatherian

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Cite this Entry

“Metatheria.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Metatheria. Accessed 2 Jul. 2022.

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