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plural noun

: a suborder of Notoungulata comprising generalized ungulates of the Paleocene to Pleistocene of South America mostly of huge size equaling a large rhinoceros and having mostly persistent teeth that consist of large incisors, small lower canines, and high-crowned curved molars


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taxonomic synonym of notoungulata

Word History


Plural noun

New Latin, from tox- entry 2 + -odontia

New Latin, from tox- entry 2 + -odontia

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Dictionary Entries Near Toxodontia

Cite this Entry

“Toxodontia.” Dictionary, Merriam-Webster, Accessed 26 May. 2024.

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