[{"Bold_text": "noun", "List Items": ["any invertebrate animal of the phylum Coelenterata ,including the hydras, jellyfishes, sea anemones, and corals, characterized by a single internal cavity serving for digestion, excretion, and other functions and having tentacles on the oral end.Compare cnidarian ."]}, {"Bold_text": "adjective", "List Items": ["belonging or pertaining to the Coelenterata ."]}]