[{"Bold_text": "noun", "List Items": ["any mollusk of the class Pelecypoda (Lamellibranchiata), characterized by a bivalve shell enclosing the headless body and lamellate gills, comprising the oysters, clams, mussels, and scallops."]}, {"Bold_text": "adjective", "List Items": ["Alsopel·e·cyp·o·dous[]belonging or pertaining to the Pelecypoda."]}]