Noun | 1. | ![]() animal order - the order of animals Actinozoa, Anthozoa, class Actinozoa, class Anthozoa - a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressed madrepore, madriporian coral, stony coral - corals having calcareous skeletons aggregations of which form reefs and islands genus Maeandra, Maeandra - brain corals Acropora, genus Acropora - coelenterate genus of order Madreporaria, including staghorn corals Fungia, genus Fungia - a genus comprising the usual mushroom corals |