Meaning & use
mollusk
Last updated
any of a large group of soft-bodied invertebrate animals, many of which have a hard external shell, including snails, clams, octopuses, and squid.
See it in a sentence
Oysters, clams, and mussels are all edible mollusks.
Octopuses are mollusks, even though they have no external shell.
A note on using this word
Mollusk is the American spelling; mollusc is standard in British English. The group includes snails, bivalves like clams, and cephalopods like octopuses and squid.
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