cnidarian Syllabification: (cni·dar·i·an)Pronunciation: /nīdˈe(ə)rēən/ ZoologyDefinition of cnidarian noun an aquatic invertebrate animal of the phylum Cnidaria, which comprises the coelenterates. adjective relating to or denoting cnidarians. cnidarian in other Oxford dictionaries Definition of cnidarian in the British & World English dictionary
