1. having two valves or shells that are unequal in size or shape
Usage: biology; malacology

Examples

• The oyster is an inequivalve mollusk with distinctly different upper and lower shells.
• Inequivalve bivalves often have one valve that is larger or more curved than the other.
• Scallops are typically inequivalve, with one shell being flatter than the other.
• The fossil showed clear inequivalve characteristics in its shell structure.
• Marine biologists study inequivalve species to understand their adaptation strategies.