plural noun

: a subclass of Mammalia comprising small primitive forms extinct since the early Cenozoic, being usually considered coextensive with the Multituberculata but sometimes extended to include the Protodonta and Triconodonta

Word History


New Latin, from all- + -theria

First Known Use

1880, in the meaning defined above

Time Traveler
The first known use of Allotheria was in 1880

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Dictionary Entries Near Allotheria

Cite this Entry

“Allotheria.” Dictionary, Merriam-Webster, Accessed 23 Apr. 2024.

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