bi-valve

bivalve

[bahy-valv]
noun
1.
Also called lamellibranch. Zoology. any mollusk, as the oyster, clam, scallop, or mussel, of the class Bivalvia, having two shells hinged together, a soft body, and lamellate gills.
adjective
2.
Botany. having two valves, as a seedcase.
3.
Zoology. having two shells, usually united by a hinge.
4.
having two similar parts hinged together.

Origin:
1670–80; bi-1 + valve

bivalvular [bahy-val-vyuh-ler] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To bi-valve
Collins
World English Dictionary
bivalve (ˈbaɪˌvælv)
 
n
1.  pelecypod, Also: lamellibranch any marine or freshwater mollusc of the class Pelecypoda (formerly Bivalvia or Lamellibranchia), having a laterally compressed body, a shell consisting of two hinged valves, and gills for respiration. The group includes clams, cockles, oysters, and mussels
 
adj
2.  pelecypod, Also: lamellibranch of, relating to, or belonging to the Pelecypoda
3.  biology Also: bivalvate having or consisting of two valves or similar parts: a bivalve seed capsule
 
bi'valvular
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

bivalve
1660s in reference to mollusks with double shells; 1670s (adj.) in reference to shutters or doors; from bi- + valve. The noun is 1680s in the mollusk sense.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
bivalve   (bī'vālv')  Pronunciation Key 
Any of various mollusks of the class Bivalvia, having a shell consisting of two halves hinged together. Clams, oysters, scallops, and mussels are bivalves. The class Bivalvia is also called Pelecypoda, and was formerly called Lamellibranchia. Compare univalve.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;