lamellibranchia

from The Century Dictionary.

• Same as Lamellibranchiata.

from the GNU version of the Collaborative International Dictionary of English.

• noun plural (Zoöl.) An earlier name for the class of Mollusca including all those that have bivalve shells, as the clams, oysters, mussels, etc., now called Pelecypoda or Bivalvia.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun oysters; clams; scallops; mussels