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mollusk

[mol-uh sk] /ˈmɒl əsk/
noun
1.
any invertebrate of the phylum Mollusca, typically having a calcareous shell of one, two, or more pieces that wholly or partly enclose the soft, unsegmented body, including the chitons, snails, bivalves, squids, and octopuses.
Also, mollusc.
Origin
1775-1785
1775-85; < French mollusque < Neo-Latin Mollusca; see Mollusca
Related forms
molluskan, molluscan
[muh-luhs-kuh n] /məˈlʌs kən/ (Show IPA),
adjective, noun
mollusklike, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for mollusk
  • It is about half crustaceans and the rest would be mollusk and other things.
  • Worse, it is hunted by crabs that try to crush the mollusk between strong claws.
  • Take the mollusk for instance, the only animal born with a shell.
  • Members of the mollusk family, nudibranchs abandoned their shells millions of years ago.
  • The quality of the water determines the edibility of the mollusk.
  • The sun feeds the algae, which in turn, nourishes the mollusk.
  • The mollusk instead coats the intruder with nacre, the secretion used to make its shell, forming a pearl.
  • The mollusk body, its tentacles writhing helplessly, drifts out of its protective house.
  • The center is working to restore fish and mollusk species.
British Dictionary definitions for mollusk

mollusc

/ˈmɒləsk/
noun
1.
any invertebrate of the phylum Mollusca, having a soft unsegmented body and often a shell, secreted by a fold of skin (the mantle). The group includes the gastropods (snails, slugs, etc), bivalves (clams, mussels, etc), and cephalopods (cuttlefish, octopuses, etc)
Derived Forms
molluscan, (US) molluskan (mɒˈlʌskən) adjective, noun
mollusc-like, (US) mollusk-like, adjective
Word Origin
C18: via New Latin from Latin molluscus, from mollis soft
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for mollusk
n.

1783, mollusque (modern spelling from 1839), from French mollusque, from Modern Latin Mollusca (see Mollusca), the phylum name. Related: Molluscuous; molluscan.

Online Etymology Dictionary, © 2010 Douglas Harper
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mollusk in Science
mollusk or mollusc
  (mŏl'əsk)   
Any of numerous invertebrate animals of the phylum Mollusca, usually living in water and often having a hard outer shell. They have a muscular foot, a well-developed circulatory and nervous system, and often complex eyes. Mollusks include gastropods (snails and shellfish), slugs, octopuses, squids, and the extinct ammonites. Mollusks appear in the fossil record in the early Cambrian Period, but it is not known from what group they evolved.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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