Actinozoa
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| Noun | 1. |  Actinozoa - a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressedCnidaria, Coelenterata, phylum Cnidaria, phylum Coelenterata - hydras; polyps; jellyfishes; sea anemones; corals actinozoan, anthozoan - sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed Alcyonaria, order Alcyonaria - corals and sea anemones having eight branches Madreporaria, order Madreporaria - stony corals class - (biology) a taxonomic group containing one or more orders |
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