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Dibranchia

plural noun Di·bran·chia \ dīˈbraŋkēə \

Definition of Dibranchia

:a subclass or order of Cephalopoda including the squids and octopuses, being characterized by 2 gills, 2 auricles, 2 nephridia, an apparatus for emitting an inky fluid, and either 8 or 10 cephalic arms bearing suckers or hooks, and comprising all living cephalopods except those of the genus Nautilus
—

dibranchiate

\-ēˌāt\ adjective or noun

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Origin and Etymology of dibranchia

New Latin, from di- + Greek branchia gills

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