Definition of cephalopod Cephalopod

/sɛˈfʌlʌpɑˌd/ - [sefulupad] - ceph•a•lo•pod

We found 7 definitions of cephalopod from 6 different sources.

What does cephalopod mean?

WordNet

Noun Plural: cephalopods
cephalopod - marine mollusk characterized by well-developed head and eyes and sucker-bearing tentacles
		cephalopod mollusk
		mollusc, mollusk, shellfish invertebrate having a soft unsegmented body usually enclosed in a shell
		cephalopoda, class cephalopoda octopuses; squids; cuttlefish; pearly nautilus
		chambered nautilus, pearly nautilus, nautilus cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions
		dibranch, dibranchiate, dibranchiate mollusk cephalopods having two gills
		octopod a cephalopod with eight arms but lacking an internal shell
Adjective
cephalopod - relating or belonging to the class Cephalopoda
		cephalopodan
		cephalopoda, class cephalopoda octopuses; squids; cuttlefish; pearly nautilus

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Wiktionary

cephalopod (Noun)
Any mollusc, of the class Cephalopoda, which includes squid, cuttlefish, octopus, nautiloids etc.

Webster DictionaryWebster's Unabridged Dictionary 📘

cephalopod (n.)
Alt. of Cephalopode

OmegaWiki DictionaryOmegaWiki Dictionary Ω

cephalopod
Exclusively marine animals constituting the most advanced class of the Mollusca, including squid, octopuses, and Nautilus.\n(Source: MGH)

Wikipedia

The cephalopods (Greek plural ' (kephalópoda); "head-foot") are the mollusk class Cephalopoda characterized by bilateral body symmetry, a prominent head, and a modification of the mollusk foot, a muscular hydrostat, into the form of arms or tentacles. Teuthology, a branch of malacology, is the study of cephalopods.

The class contains two subclasses which have not died out. In the Coleoidea, the mollusk shell has been internalized or is absent; this subclass includes the octopuses, squid, and cuttlefish. In the Nautiloidea the shell remains; this subclass includes the nautilus. There are around 786 distinct living species of Cephalopods. Two important extinct taxa are Ammonoidea, the ammonites, and Belemnoidea, the belemnites.

Cephalopods are found in all the oceans of the world and at all depths. None of them can tolerate freshwater, but a few species do tolerate more or less brackish water.

Number of species.

There are many more fossil species. It is estimated there are around 11,000 extinct taxa.

Nervous system and behaviour.

Many scientists believe tha Cephalopods are the most intelligent of the invertebrates. Cephalopods have well developed senses and large brains. Their brains are larger than those of gastropods or bivalves. With the exception of Nautilus, they have special skin cells called chromatophores that change color and are used for communication and camouflage. The nervous system of cephalopods is the most complex of the invertebrates. The giant nerve fibers of