The total mass of circulating white blood cells, their precursors, and the leukopoietic cells from which they arise.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for leukon
Historical Examples of leukon
Fighting ensued, and he was beaten close to the town of Leukon.