watervascular system

water-vascular system

[waw-ter-vas-kyuh-ler, wot-er-]
noun Zoology.
a system of closed, fluid-filled tubes and ducts of echinoderms used in clinging, locomotion, feeding, and respiration.

Origin:
1865–70

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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