Definition of: coelenterate

(si·len′tə·rāt) noun
Any of a phylum of invertebrate animals (Coelenterata) having an enteric cavity occupying the entire interior of the body and functioning as a vascular as well as a digestive system: the phylum includes sea anemones, corals, jellyfish, and hydras.
—adjective Belonging or pertaining to the Coelenterata. [<COEL(O)- + Gk. enteron intestine]
—coe·len·ter·ic (sē′len·ter′ik) adjective