— bivalvular /buy val"vyeuh leuhr/ , adj.
/buy"valv'/ , n.
1. Also called lamellibranch . Zool. any mollusk, as the oyster, clam, scallop, or mussel, of the class Bivalvia, having two shells hinged together, a soft body, and lamellate gills.
adj.
2. Bot. having two valves, as a seedcase.
3. Zool. having two shells, usually united by a hinge.
4. having two similar parts hinged together.
[ 1670-80; BI- 1 + VALVE ]