equivalve

[ ee-kwuh-valv ]

adjective

1. (of a bivalve mollusk) having the valves of the shell equal in shape and size.

Word History and Origins

Origin of equivalve¹

First recorded in 1860–65; equi- + valve

Example Sentences

A shell described by De Blainville as an equivalve, terebrating species of Anatina.

From Project Gutenberg

Thus a bivalve-shell, the valves of which are nearly alike, would be described as sub-equivalve.

From Project Gutenberg

In the former, all the shells are inequivalve; in the latter equivalve.

From Project Gutenberg

Shell transverse, equivalve, not affixed, the tops decorticated.

From Project Gutenberg

Shell bivalve, equivalve, very transversely elongated, open at both ends.

From Project Gutenberg