leukocidin

[lōō′kə-sīdn, lōō-kōsĭ-dn]
n.
  1. A substance, produced by certain species of Staphylococcus and Streptococcus bacteria, that can destroy or lyse white blood cells.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.