plural noun
Ag·​na·​tha | \ ˈag-nə-thə \

Definition of Agnatha

1 : a superclass or other division of Vertebrata comprising those without jaws — compare gnathostomata
2 : a group of carnivorous air-breathing snails without jaws

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First Known Use of Agnatha

1865, in the meaning defined at sense 1

History and Etymology for Agnatha

borrowed from New Latin, from a- a- entry 2 + -gnatha -gnatha

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The first known use of Agnatha was in 1865

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Cite this Entry

“Agnatha.” Dictionary, Merriam-Webster, Accessed 5 Aug. 2020.

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