Vascular tissue

Vascular tissue
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:

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  • vascular tissue — noun a) The arteries, veins, capillaries, and associated tissues in an animal. b) The xylem, phloem, and associated tissues in a vascular plant. Syn: circulatory tissue See Also …   Wiktionary

  • vascular tissue — Bot. plant tissue consisting of ducts or vessels, that, in the higher plants, forms the system (vascular system) by which sap is conveyed through the plant. [1805 15] * * * …   Universalium

  • vascular tissue — noun Date: 1842 plant tissue concerned mainly with conduction; especially the specialized tissue of higher plants consisting essentially of phloem and xylem …   New Collegiate Dictionary

  • vascular tissue —   Supportive and conductive tissue in plants, consisting of xylem and phloem …   Expanded glossary of Cycad terms

  • vascular tissue — vas′cular tis sue n. bot plant tissue consisting of ducts or vessels that in the higher plants forms the system(vas′cular sys tem)by which sap is conveyed through the plant • Etymology: 1805–15 …   From formal English to slang

  • vascular tissue — /væskjələ ˈtɪʃu/ (say vaskyuhluh tishooh) noun plant tissue consisting of ducts or vessels which, in highly developed plants, form the system by which sap is conveyed through the plant …   Australian English dictionary

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