or chiefly Brit  leu*co*pe*nia  n :  a condition in which the number of leukocytes circulating in the blood is abnormally low and which is most commonly due to a decreased production of new cells in conjunction with various infectious diseases, as a reaction to various drugs or other chemicals, or in response to irradiation leu*ko*pe*nic or chiefly Brit  leu*co*pe*nic  adj 
 
 
 
Similar sounding terms:  ly·co·pene  ly·co·pin 
 
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