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vascular |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Vascular \Vas"cu*lar\, a. [L. vasculum a small vessel, dim. of vas vessel: cf F. vasculaire See {Vase}, and cf Vessel.] 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. 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. {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. From WordNet r 1.6 [wn]: vascular adj : of or relating to or having vessels that conduct and circulate fluids; "vascular constriction"; "a vascular bundle" [ant: {avascular}]
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