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Definition of cnidarian


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cni·dar·i·an  audio  (n-dâr-n) KEY 

NOUN:
Any of various invertebrate animals of the phylum Cnidaria, characterized by a radially symmetrical body with a saclike internal cavity, and including the jellyfishes, hydras, sea anemones, and corals. Also called coelenterate.
ADJECTIVE:
Of, relating to, or belonging to the phylum Cnidaria.

ETYMOLOGY:
New Latin Cndria, phylum name, from Greek knd, sea nettle


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