Noun cnidarian has 1 sense
  1. coelenterate, cnidarian - radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms
    --1 is a kind of invertebrate
    --1 is a member of Cnidaria, phylum Cnidaria, Coelenterata, phylum Coelenterata
    --1 has parts: coelenteron
    --1 has particulars:
     polyp; medusa; jellyfish, medusa, medusan; scyphozoan; hydrozoan, hydroid; anthozoan, actinozoan
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