agranulocytosis

n. disease characterized by a high fever and a reduced number of white blood cells (Medicine)

Agranulocytosis (literally meaning an increase of agranulocytes or more commonly, a lack of granulocytes) is an acute condition involving a severe and dangerous leukopenia (reduction in the number of white blood cells) in the body. Concentrations of granulocytes (a class which includes neutrophils, basophils and eosinophils) can often drop to below 500 cells/mm³ of blood), less than a sixth of the reference value of 3-10 x 103 cells/mm³.
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Agranulocytosis /agran·u·lo·cy·to·sis/ a symptom complex characterized by decreased granulocytes and by lesions of the throat, other mucous [more]Agranulocytosis - Community and Resources

Noun
1. an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes
(synonym) agranulosis, granulocytopenia
(hypernym) blood disease, blood disorder

noun
usually fatal disease where the number of granulocytes (white blood cells) falls sharply because of a defect in the bone marrow