Webster's English Dictionary

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venous

ve.nous \'ve--n*s\ aj [L venosus, fr. vena vein] 1: of, relating to or full 
   of veins {a ~ rock} {a ~ syst em} of blood  2: having passed through the 
   capillaries and given up oxygen for the tissu es and become charged with 
   carbon dioxide : UNOXYGENATED - ve.nous.ly av