adjective of or relating to or having vessels that conduct and circulate fluids
a vascular bundle
L. vasculum a small vessel, dim. of vas vessel: cf. F. vasculaire. See Vase, and cf. Vessel.
(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.
(Bot.)Of or pertaining to the higher division of plants, that is, the phænogamous plants, all of which are vascular, in distinction from the cryptogams, which to a large extent are cellular only.