or chiefly Brit  hy*per*hep*a*rin*ae*mia  n :  the presence (as from ionizing radiation) of excess heparin in the blood usu. resulting in hemorrhage hy*per*hep*a*rin*emic or chiefly Brit  hy*per*hep*a*rin*ae*mic  adj 
 
 
 
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