or chiefly Brit  hy*po*gam*ma*glob*u*lin*ae*mia  n :  a deficiency of gamma globulins and esp. antibodies in the blood : also  :  a state of immunological deficiency characterized by this hy*po*gam*ma*glob*u*lin*emic or chiefly Brit  hy*po*gam*ma*glob*u*lin*ae*mic  adj 
 
 
 
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