Mollusca

Definition of Mollusca

Mol`lus´ca
prop. n. p1.(Zool.) One of the grand divisions of the animal kingdom, a phylum including the classes Cephalopoda, Gastropoda, Pteropoda, Scaphopoda, and Pelecyopoda (syn. Bivalvia, formerly called Lamellibranchiata, or Conchifera). These animals have an unsegmented bilateral body, with most of the organs and parts paired, but not repeated longitudinally. Most of them develop a mantle, which incloses either a branchial or a pulmonary cavity. They are generally more or less covered and protected by a calcareous shell, which may be univalve, bivalve, or multivalve.

Related Words

animal kingdom, Animalia, Bivalvia, Cephalopoda, class Bivalvia, class Cephalopoda, class Gasteropoda, class Gastropoda, class Lamellibranchia, class Pelecypoda, class Polyplacophora, class Scaphopoda, Gasteropoda, Gastropoda, kingdom Animalia, Lamellibranchia, mollusc, mollusk, phylum, phylum Mollusca, Polyplacophora, Scaphopoda, shellfish
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Moliminous
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mollycoddle
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