n. [ F. bivalve; bi- (L. bis) + valve valve. ]
a. [ Pref. bi- + valve. ] (Zool. & Bot.) Having two shells or valves which open and shut, as the oyster and certain seed vessels. [ 1913 Webster ]
a. Having two valves, as the oyster and some seed pods; bivalve. [ 1913 Webster ]
a. Bivalvular. [ 1913 Webster ]
a. Having two valves. [ 1913 Webster ]
n. [ See Tube, Valve. ] (Zool.) A shell or tube formed by an annelid, as a serpula. [ 1913 Webster ]