- belonging or pertaining to the Dibranchiata, a subclass or order of cephalopods with two gills, including the decapods and octopods.
- a dibranchiate cephalopod.
- 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
- any dibranchiate mollusc
