Definition of Gnathostomata
:a superclass or other division of Vertebrata comprising those with jaws — compare agnatha
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Gnathostomata
plural noun
Gnatho·sto·ma·ta
\
ˌnāthəˈstōmətə
,
ˌnath-
\
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Origin and Etymology of gnathostomata
New Latin, from gnath- + -stomata
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