or chiefly Brit  eryth*ro*leu*kae*mia  n :  a malignant disorder that is marked by proliferation of erythroblastic and myeloblastic tissue and in later stages by leukemia eryth*ro*leu*ke*mic or chiefly Brit  eryth*ro*leu*kae*mic  adj 
 
 
 
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