mollusk

or mol·lusc

[ mol-uh sk ]
/ ˈmɒl əsk /
|

noun

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.

Nearby words

  1. molluscan,
  2. molluscoid,
  3. molluscous,
  4. molluscum,
  5. molluscum contagiosum,
  6. mollusks,
  7. mollweide projection,
  8. molly,
  9. molly maguire,
  10. molly maguires

Origin of mollusk

1775–85; < French mollusque < New Latin Mollusca; see Mollusca

Related formsmol·lus·kan, mol·lus·can [muh-luhs-kuh n] /məˈlʌs kən/, adjective, nounmol·lusk·like, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for molluscs


Word Origin and History for molluscs

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

Science definitions for molluscs

mollusk

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.