plural noun Ag·na·tha \ˈag-nə-thə\

Definition of Agnatha

  1. 1 :  a superclass or other division of Vertebrata comprising those without jaws — compare gnathostomata

  2. 2 :  a group of carnivorous air-breathing snails without jaws

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Origin and Etymology of agnatha

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

First Known Use: 1865

Seen and Heard

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to criticize severely

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