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water-vascular system

American  
[waw-ter-vas-kyuh-ler, wot-er-] / ˈwɔ tərˈvæs kyə lər, ˈwɒt ər- /

noun

Zoology.

  1. a system of closed, fluid-filled tubes and ducts of echinoderms used in clinging, locomotion, feeding, and respiration.

Etymology

Origin of water-vascular system

First recorded in 1865–70

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.