Leukocytosis

n. increase in the number of white blood cells in the blood (also leucocytosis)

Leukocytosis is an elevation of the white blood cell count (the leukocyte count) above the normal range. The normal adult human leukocyte count in peripheral blood is 4.4-10.8 x 109/L. A white blood count of 11.0 x 109/L or more suggests leukocytosis.Leukocytosis is very common in acutely ill patients. It occurs in response to a wide variety of conditions, including viral, bacterial, fungal, or parasitic infection, cancer, hemorrhage, and exposure to certain medications or chemicals including steroids. Leukocytosis can also be the first indication of neoplastic growth of leukocytes.
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Leukocytosis is a condition characterized by an elevated number of white cells in the blood. [more]Leukocytosis - Community and Resources

Noun
1. an abnormal increase in the number of white blood cells in the blood as a result of infection (as in leukemia)
(synonym) leucocytosis
(hypernym) blood disease, blood disorder

Increase in the number of white blood cells.