Noun: cnidarian nI'deh-ree-un
- Radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms
"Jellyfish and sea anemones are common cnidarians";
- coelenterate
Derived forms: cnidarians
Type of: invertebrate
Part of: Cnidaria, Coelenterata, phylum Cnidaria, phylum Coelenterata
Encyclopedia: Cnidarian