Definitions

from the GNU version of the Collaborative International Dictionary of English

  • n.pl. One of the grand divisions of the animal kingdom. By many writers it was formerly included in the Radiata.

from The Century Dictionary and Cyclopedia

  • A phylum or subkingdom of metazoic animals; the echinoderms.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers

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