adj 1 a  :  full of or characterized by veins  b  :  made up of or carried on by veins <the circulation>   2  :  of, relating to, or performing the functions of a vein <a inflammation>  < arteries>   3  of blood  :  having passed through the capillaries and given up oxygen for the tissues and become charged with carbon dioxide and ready to pass through the respiratory organs to release its carbon dioxide and renew its oxygen supply  :  dark red from reduced hemoglobin - compare ARTERIAL2   .
 
 
 
Similar sounding terms:  fu·nis  vein·ous 
 
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