Asterioidea

Definitions

  • Webster's Revised Unabridged Dictionary
    • n. pl Asterioidea (Zoöl) A class of Echinodermata including the true starfishes. The rays vary in number and always have ambulacral grooves below. The body is star-shaped or pentagonal.
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Etymology

Webster's Revised Unabridged Dictionary
NL., fr. Gr. 'asteri`as + -oid,. See Asterias