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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 for mollusc
  • These are crustaceans that survive by dragging around a cast-off mollusc shell for protection and shelter.
  • Aspects of freshwater mollusc ecological biogeography.
British Dictionary definitions for mollusc

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 mollusc
mollusk
1783, from Fr. mollusque, from Mod.L. Mollusca, order name, adopted by Linnæus 1758 from L. mollusca, neut. pl. of molluscus "thin-shelled," from mollis "soft," from PIE base *mel-/*mol-/*ml- "grind." Linnæus applied the word to a heterogeneous group of invertebrates, not originally including mollusks with shells; the modern scientific use is after a classification proposed 1790s by Fr. naturalist Georges Léopole Chrétien Frédéric Dagobert, Baron Cuvier (1769-1832).
mollusc
see mollusk.
Online Etymology Dictionary, © 2010 Douglas Harper
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mollusc 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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