- (of a bivalve mollusk) having the valves of the shell unequal in shape and size.
Origin of inequivalve
Examples from the Web for inequivalve
Historical Examples of inequivalve
In the former, all the shells are inequivalve; in the latter equivalve.A Conchological Manual
George Brettingham Sowerby
A bivalve is said to be equivalve when the two shells composing it are of the same size, inequivalve when they are not.Sea-Weeds, Shells and Fossils
Asymmetrical, inequivalve, fixed, with extensive pallial sutures; no siphons.