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|Noun||1.||Scyphozoa - coelenterates in which the polyp stage is absent or at least inconspicuous: jellyfishes|
Cnidaria, Coelenterata, phylum Cnidaria, phylum Coelenterata - hydras; polyps; jellyfishes; sea anemones; corals
scyphozoan - any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle
class - (biology) a taxonomic group containing one or more orders