noun
- a mollusk of the class Bivalvia, having a shell with two hinged valves
Usage: zoological
Examples
- The pelecypod’s shell opened and closed as it filtered water for food.
- Clams and oysters are common examples of pelecypods.
- The fossil pelecypod showed clear evidence of the creature’s two-part shell.
- Marine biologists studied the pelecypod’s feeding habits in the shallow bay.
- The pelecypod used its muscular foot to burrow into the sandy ocean floor.