Water vascular system
Vascular Vas"cu*lar, a. [L. vasculum a small vessel, dim. of vas vessel: cf. F. vasculaire. See {Vase}, and cf. Vessel.] [1913 Webster] 1. (Biol.) (a) Consisting of, or containing, vessels as an essential part of a structure; full of vessels; specifically (Bot.), pertaining to, or containing, special ducts, or tubes, for the circulation of sap. (b) Operating by means of, or made up of an arrangement of, vessels; as, the vascular system in animals, including the arteries, veins, capillaries, lacteals, etc. (c) Of or pertaining to the vessels of animal and vegetable bodies; as, the vascular functions. [1913 Webster]

2. (Bot.) Of or pertaining to the higher division of plants, that is, the ph[ae]nogamous plants, all of which are vascular, in distinction from the cryptogams, which to a large extent are cellular only. [1913 Webster]

{Vascular plants} (Bot.), plants composed in part of vascular tissue, as all flowering plants and the higher cryptogamous plants, or those of the class {Pteridophyta}. Cf. {Cellular plants}, {Cellular}.

{Vascular system} (Bot.), the body of associated ducts and woody fiber; the fibrovascular part of plants.

{Vascular tissue} (Bot.), vegetable tissue composed partly of ducts, or sap tubes.

{Water vascular system} (Zo["o]l.), a system of vessels in annelids, nemerteans, and many other invertebrates, containing a circulating fluid analogous to blood, but not of the same composition. In annelids the fluid which they contain is usually red, but in some it is green, in others yellow, or whitish. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • water-vascular system — [wôt′ərvas′kyə lər] n. in echinoderms, a system of closed tubes and ducts filled with sea water containing some protein, and functioning variously, as in locomotion, food gathering, clinging, and respiration …   English World dictionary

  • Water vascular system — The water vascular system is a hydraulic system used by echinoderms, such as starfish and sea urchins, for locomotion, food and waste transportation, and respirationcite book | first = Eldra | last = Solomon| coauthors = Linda Berg, Diana Martin… …   Wikipedia

  • water vascular system — noun system of fluid filled tubes used by echinoderms in locomotion and feeding and respiration • Hypernyms: ↑vascular system • Part Holonyms: ↑echinoderm …   Useful english dictionary

  • water vascular system — (ECHINODERMATA) A unique system comprised of tube like body wall appendages (tube feet), and a system of canals derived from the coelom …   Dictionary of invertebrate zoology

  • water-vascular system — noun Date: 1870 a system of canals in echinoderms containing a circulating watery fluid that is used for the movement of the tentacles and tube feet …   New Collegiate Dictionary

  • water-vascular system — /waw teuhr vas kyeuh leuhr, wot euhr /, Zool. a system of closed, fluid filled tubes and ducts of echinoderms used in clinging, locomotion, feeding, and respiration. [1865 70] * * * …   Universalium

  • water-vascular system — noun : a system of vessels in echinoderms containing a watery fluid that is analogous to blood, is used for the movement of tentacles and tube feet, and may also function in excretion and respiration …   Useful english dictionary

  • Vascular system — Vascular Vas cu*lar, a. [L. vasculum a small vessel, dim. of vas vessel: cf. F. vasculaire. See {Vase}, and cf. Vessel.] [1913 Webster] 1. (Biol.) (a) Consisting of, or containing, vessels as an essential part of a structure; full of vessels;… …   The Collaborative International Dictionary of English

  • vascular system — noun the vessels and tissue that carry or circulate fluids such as blood or lymph or sap through the body of an animal or plant • Hypernyms: ↑system • Hyponyms: ↑water vascular system, ↑portal system, ↑lymphatic system, ↑systema lymphaticum,… …   Useful english dictionary

  • water-vascular — | ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ ̷ ̷ adjective : of, relating to, or made up of vessels that in many invertebrates contain a watery fluid see water vascular system * * * waˈter vasˈcular adjective 1. Relating to vessels in certain invertebrates which contain a …   Useful english dictionary

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