hyperleukocytosis

[ hī′pər-lōō′kə-sī-tōsĭs ]

n.

An unusually large increase in number and proportion of white blood cells in blood or tissues.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.