- The definition of a cephalopod is a marine creature with a large head, large eyes and tentacles.
An octopus is an example of a cephalopod.
cephalopod definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of a class (Cephalopoda) of marine mollusks having a distinct head with highly developed eyes, varying numbers of arms, with suckers, attached to the head about the mouth, and a saclike fin-bearing mantle, as an octopus, squid, or cuttlefish
Origin: cephalo- plush -pod
cephalopod definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Any of various marine mollusks of the class Cephalopoda, such as the octopus, squid, cuttlefish, or nautilus, having a large head, large eyes, prehensile tentacles, and, in most species, an ink sac containing a dark fluid used for protection or defense.adjective
Of, relating to, or belonging to the class Cephalopoda.
Origin: From New Latin Cephalopoda, class name : cephalo- + -poda, -pod.
- cephˌa·lopˈo·dan noun & adj.
cephalopod - Science Definition
Any of various marine mollusks of the class Cephalopoda, having long tentacles around the mouth, a large head, a pair of large eyes, and a sharp beak. Cephalopods have the most highly developed nervous system of all invertebrates. Many cephalopods squirt a cloud of dark inky liquid to confuse predators. Cephalopods include the octopus, squid, cuttlefish, and nautilus, and the extinct ammonites, belemnites, and other nautiloids.