"With plural concord. A class of coelenterates including sea anemones and coral polyps (now more usually called Anthozoa)", Mid 19th cent.; earliest use found in The Penny Cyclopaedia. From scientific Latin Actinozoa ( H.-M. D. de Blainville Man. d'actinologie 186) from actino- + -zoa.[Actinozoa etymology, Actinozoa origin, 英语词源]