Charcot-Leyden crystals

[-līdn]
pl.n.
  1. Crystals in the shape of elongated double pyramids, formed from eosinophils, found in the sputum in bronchial asthma and in the feces in some intestinal infections.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.