anthozoan Syllabification: (an·tho·zo·an)Pronunciation: /ˌanTHəˈzōən/ ZoologyDefinition of anthozoan noun a member of a large class of marine coelenterates (the Anthozoa), such as a sea anemone or coral. adjective relating to or denoting anthozoans. anthozoan in other Oxford dictionaries Definition of anthozoan in the British & World English dictionary