echinoderm

from WordNet (r) 3.0 (2006)
echinoderm
    n 1: marine invertebrates with tube feet and five-part radially
         symmetrical bodies
    
from The Collaborative International Dictionary of English v.0.48
Echinoderm \E*chin"o*derm`\, n. (Zo["o]l.)
   One of the Echinodermata.
   [1913 Webster]
    

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