bivalve
Definitions
An aquatic mollusk, such as an oyster or clam, that has a shell consisting of two hinged parts.
A shell or valve belonging to such a mollusk.
Examples
The oyster is a common type of bivalve found in coastal waters.
Scientists studied the fossilized remains of the ancient bivalve to understand prehistoric sea levels.
Many species of bivalve are harvested commercially for their meat and pearls.