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echinoderm: Meaning and Definition of

e•chi•no•derm

Pronunciation: (i-kī'nu-dûrm", ek'u-nu-), [key]
— n.
  1. any marine animal of the invertebrate phylum Echinodermata, having a radiating arrangement of parts and a body wall stiffened by calcareous pieces that may protrude as spines and including the starfishes, sea urchins, sea cucumbers, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
echinate echinodermatous
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