Webster's English Dictionary

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vascular

vas.cu.lar \'vas-ky*-l*r\ aj [NL vascularis, fr. L vasculum small vessel, 
   dim. of vas] 1: of or relating to a channel for the conveyance of a body 
   fluid (as bloo d or sap) or to a system of such channels; also : supplied 
   with or made up of such channels and esp. blood vessels {a ~ tumor} {a ~ 
   system} 2: marked by vigor and ardor : SPIRITED, PASSIONATE