dibranchiate

adjective

1. belonging or pertaining to the Dibranchiata, a subclass or order of cephalopods with two gills, including the decapods and octopods.

noun

2. a dibranchiate cephalopod.

adjective

1. of, relating to, or belonging to the Dibranchiata, a group or former order of cephalopod molluscs, including the octopuses, squids, and cuttlefish, having two gills

noun

2. any dibranchiate mollusc