“+ noun plural
Usage: capitalized
Etymology: New Latin, from pseud- + Lamellibranchia
in some classifications : an order of Lamel libranchia comprising bivalve mollusks (as scallops, pearl oysters, true oysters) having gills with interfilamentary and interlamellar junctions poorly developed, the mantle edges entirely open, and the anterior adductor muscle usually wanting
• pseu·do·lamellibranchiate “+ adjective