Molluscous

mol·lusk also mol·lusc  (mlsk)

n.

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 edible shellfish and the snails.

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[French mollusque, from New Latin Mollusca, phylum name, from neuter pl. of Latin molluscus, thin-shelled, from mollis, soft; see mel-¹ in Indo-European roots.]

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mol·luscous (m-lsks) adj.