- (of a bivalve mollusk) having the valves of the shell equal in shape and size.
Origin of equivalve
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for equivalve
Shell transverse, equivalve, not affixed, the tops decorticated.
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
The shells are porcelanous and translucent, equivalve, with an external ligament, and at least two cardinal teeth in each valve.
The shells are equivalve, and devoid of bright colors or striking sculptural features.
Shell bivalve, equivalve, very transversely elongated, open at both ends.