- cephalopod, cephalopodan - relating or belonging to the class Cephalopoda
- cephalopod, cephalopod mollusk - marine mollusk characterized by well-developed head and eyes and sucker-bearing tentacles
--1 is a kind of mollusk, mollusc, shellfish
--1 is a member of Cephalopoda, class Cephalopoda
--1 has particulars:chambered nautilus, pearly nautilus, nautilus; dibranchiate, dibranchiate mollusk, dibranch; octopod; decapod