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[ee-kwuh-valv] /ˈi kwəˌvælv/
(of a bivalve mollusk) having the valves of the shell equal in shape and size.
Origin of equivalve
First recorded in 1860-65; equi- + valve Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for equivalve
Historical Examples
  • 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.

  • The shells are porcelanous and translucent, equivalve, with an external ligament, and at least two cardinal teeth in each valve.

    The Sea-beach at Ebb-tide Augusta Foote Arnold
  • The shells are equivalve, and devoid of bright colors or striking sculptural features.

    The Sea-beach at Ebb-tide Augusta Foote Arnold
  • Shell bivalve, equivalve, very transversely elongated, open at both ends.

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

    A Conchological Manual George Brettingham Sowerby

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