'Cnidaria' definitions:
Definition of 'Cnidaria'
(from WordNet)
noun
Hydras; polyps; jellyfishes; sea anemones; corals [syn: Cnidaria, phylum Cnidaria, Coelenterata, phylum Coelenterata]
Definition of 'Cnidaria'
From: GCIDE
- Cnidaria \Cni*da"ri*a\ (n[i^]*d[=a]"r[i^]*[.a]), n. pl. [NL. See Cnida.] (Zool.) A comprehensive group equivalent to the true C[oe]lenterata, i. e., exclusive of the sponges. They are so named from presence of stinging cells (cnidae) in the tissues. See Coelenterata. [1913 Webster]