Hypertext Webster Gateway: "echinoderm"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Echinoderm \E*chin"o*derm`\, n. (Zo["o]l.)
One of the Echinodermata.
From WordNet (r) 1.7 (wn)
echinoderm
n : marine invertebrates with tube feet and calcite-covered
five-part radially symmetrical bodies
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