Gnathostoma (nathostoma)

[NL., Gnat hos to mat a (nath-ō-stō'ma-tä), n. pl. [NL., pl. of Gnathostoma, q. v.] 1. A group of entomostracous crustaceans, containing the phyllopods, copepods, and ostracodes, as a suborder of Entomostraca.-2. A tribe of true copepods, having a completely segmented body and masticatory mouth-parts, and being for the most part not parasitic. It contains the families Cy clopidæ, Calanidæ, and No to delph yidæ. Claus. gnathostomatous (nath-o-stom'a-tus), a. [