DictionarymolluskSoft-bodied invertebrate
noun

mollusk

MAH-lusk/ˈmɑləsk/

A soft-bodied invertebrate, often protected by a shell.

The snail is a mollusk with a soft body beneath its spiral shell.

A living garden snail in side view, its soft body extended beneath a spiral shell, showing a familiar shelled mollusk.
Etymology

Latin molluscus meant “thin-shelled” and was derived from a word for “soft.” The animal name identifies a soft-bodied group, whose members often have a protective hard shell.

In context

Chrysaellect India1:25
the mollusk's body can produce more proteins and calcium carbonate to repair the broken parts of the shell. Not all mollusks have shells. For example, an octopus is a mollusk which doesn't have a shell.
Let's learn About Shells! | What are shells made of? | marine animals| educational videos for kids

More examples

  • We find tiny mollusks attached to rocks along the shore.
  • A squid is a mollusk even though it has no external shell.
  • The aquarium keeps several kinds of mollusks in this tank.

Forms

mollusk · mollusks

molluscan adjective — Relating to mollusks or their characteristics.

Similar words

invertebrate
A broader term that also includes insects, worms, and jellyfish.
shellfish
Covers aquatic shelled animals, including crustaceans, but excludes land snails.