[ hī′pər-krō′mə-tĭz′əm ]
Excessive formation of skin pigment.hyperchromia
A condition in which cells or parts of cells, especially cell nuclei, stain more intensely than normal.hyperchromasia
Related formshy′per•chro•mat′ic (-krə-măt′ĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.