dibranchiata Meaning, Definition & Usage

  1. noun comprising all living cephalopods except the family Nautilidae: the orders Octopoda (octopuses) and Decapoda (squids and cuttlefish)
    Dibranchia; subclass Dibranchiata; subclass Dibranchia.

WordNet

Di*bran`chi*a"ta noun plural
Etymology
NL., fr. Gr. = twice + gills.
Definitions
  1. (Zoöl.) An order of cephalopods which includes those with two gills, an apparatus for emitting an inky fluid, and either eight or ten cephalic arms bearing suckers or hooks, as the octopi and squids. See Cephalopoda.

Webster 1913