Meaning of water-vascular system

wa'ter-vas'cu•lar sys"tem

Pronunciation: (wô'tur-vas'kyu-lur, wot'ur-), [key]
— Zool. Zool.
  1. a system of closed, fluid-filled tubes and ducts of echinoderms used in clinging, locomotion, feeding, and respiration.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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