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mol·luskalso mol·lusc (mŏl′əsk)
Any of numerous chiefly marine invertebrates of the phylum Mollusca, typically having a soft unsegmented body, a mantle, and a protective calcareous shell, and including the snails, clams, and squids.
[French mollusque, from New Latin Mollusca, phylum name, from neuter pl. of Latin molluscus, thin-shelled, from mollis, soft; see mel- in Indo-European roots.]
mol·lus′cous (mə-lŭs′kəs) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
or mol•lusc(ˈmɒl əsk)
any invertebrate of the phylum Mollusca, having a calcareous shell of one or more pieces that wholly or partly enclose the soft, unsegmented body: includes the chitons, snails, bivalves, and octopuses.
[1775–85; < French mollusque < New Latin Mollusca, neuter pl. of Latin molluscus, derivative of mollis soft]
mol•lus•kan, mol•lus•can (məˈlʌs kən) adj., n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
mol·luskor mol·lusc (mŏl′əsk)
Any of numerous soft-bodied invertebrate animals, usually living in water and frequently having a hard outer shell. Mollusk bodies have a muscular foot, a well-developed circulatory and nervous system, and often complex eyes. Mollusks include gastropods (snails and shellfish), slugs, octopuses, and squids.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||mollusk - invertebrate having a soft unsegmented body usually enclosed in a shell|
carapace, cuticle, shell, shield - hard outer covering or case of certain organisms such as arthropods and turtles
invertebrate - any animal lacking a backbone or notochord; the term is not used as a scientific classification
scaphopod - burrowing marine mollusk
gastropod, univalve - a class of mollusks typically having a one-piece coiled shell and flattened muscular foot with a head bearing stalked eyes
coat-of-mail shell, polyplacophore, sea cradle, chiton - primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates
bivalve, lamellibranch, pelecypod - marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together
cephalopod, cephalopod mollusk - marine mollusk characterized by well-developed head and eyes and sucker-bearing tentacles
shellfish - meat of edible aquatic invertebrate with a shell (especially a mollusk or crustacean)
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