Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having valves of the same size (as is normal)
  • n. Any bivalve mollusc whose valves are of the same size.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having the valves equal in size and from, as in most bivalve shells.

from The Century Dictionary and Cyclopedia

  • In conchology, having valves equal in size and form, as a bivalve mollusk. Also equivalvular.
  • n. A bivalve shell in which the valves are of equal size and form.

Etymologies

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