Definition of mollusk in English:

mollusk

Syllabification: mol·lusk
Pronunciation: /ˈmäləsk
 
/
(chiefly British also mollusc)

noun

  • An invertebrate of a large phylum that includes snails, slugs, mussels, and octopuses. They have a soft, unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell.
    • Phylum Mollusca: several classes, in particular Gastropoda, Bivalvia, and Cephalopoda
    More example sentences
    • As gardeners already know, all other slugs and snails (or gastropod mollusks, to the experts) sport a soft and slimy foot.
    • The beach sands are dominated by shells of bivalve mollusks, mainly venerids, gastropods, and echinoderms.
    • Small fish and a variety of other aquatic creatures, including mollusks and crustaceans, make up the Pigeon Guillemot's diet.

Derivatives

molluskan

Pronunciation: /məˈləsˌkən/
(or molluscan) adjective
More example sentences
  • The adaptations of gastropods for drilling molluscan prey also increased during the Mesozoic and Cenozoic.
  • Four new molluscan species, a bivalve and three gastropods, are named from shallow-marine, lower Upper Cretaceous strata in Oregon.
  • Despite their antiquity, living terebratulids are advanced organisms, able to out-perform molluscan bivalves in filter feeding efficiency under certain conditions.

Origin

late 18th century: from modern Latin mollusca, neuter plural of Latin molluscus, from mollis 'soft'.

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