(Zoology)an aquatic invertebrate animal of a phylum that includes jellyfishes, corals, and sea anemones. They are distinguished by having a tube- or cup-shaped body and a single opening ringed with tentacles that typically bear stinging cells (nematocysts) (动)腔肠动物。 亦称 cnidarian
Phylum Cnidaria (formerly Coelenterata): four classes 刺胞门(原腔肠动物门):4纲
语源
late 19th cent.: from modern Latin Coelenterata, from Greek koilos 'hollow' + enteron 'intestine'