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Definition of Cnidaria
1. Noun. Hydras; polyps; jellyfishes; sea anemones; corals.
Exact synonyms: Coelenterata, Phylum Cnidaria, Phylum Coelenterata
Group relationships: Metazoa, Subkingdom Metazoa
Member holonyms: Cnidarian, Coelenterate, Polyp, Medusa, Medusan, Medusoid, Class Scyphozoa, Scyphozoa, Jellyfish, Class Hydrozoa, Hydrozoa, Actinozoa, Anthozoa, Class Actinozoa, Class Anthozoa
Generic synonyms: Phylum
Group relationships: Metazoa, Subkingdom Metazoa
Member holonyms: Cnidarian, Coelenterate, Polyp, Medusa, Medusan, Medusoid, Class Scyphozoa, Scyphozoa, Jellyfish, Class Hydrozoa, Hydrozoa, Actinozoa, Anthozoa, Class Actinozoa, Class Anthozoa
Generic synonyms: Phylum
Definition of Cnidaria
1. n. pl. A comprehensive group equivalent to the true Cœlenterata, i. e., exclusive of the sponges. They are so named from presence of stinging cells (cnidae) in the tissues. See Coelenterata.
Definition of Cnidaria
1. Noun. cnidarian ¹
¹ Source: wiktionary.com
Medical Definition of Cnidaria
1. A phylum of radially symmetrical invertebrates having a body composed of two layers of cells which comprise definite tissues. It includes hydroids (hydra), jellyfish, sea anemones, and corals. (12 Dec 1998)