Metatheria

plural noun

Meta·​the·​ria
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

Word History

Etymology

New Latin, from meta- + -theria

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Dictionary Entries Near Metatheria

Cite this Entry

“Metatheria.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Metatheria. Accessed 1 Dec. 2024.

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