echinoderm

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English[edit]

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Etymology[edit]

Ancient Greek ἐχῖνος (ekhinos, hedgehog) + δέρμα (derma, skin)

Noun[edit]

echinoderm (plural echinoderms)

  1. Any member of the Echinodermata, a group of radially symmetric, spiny-skinned marine animals. Examples of echinoderms include seastars, sea urchins, sea cucumbers, crinoids, and sand dollars.

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