The excretion of urine of a dark color, resulting from the presence of melanin or other pigments or from the action of coal tar derivatives.

Nearby words

  1. melanotic neuroectodermal tumor,
  2. melanotic whitlow,
  3. melanotroph,
  4. melanotropin,
  5. melanous,
  6. melanuric,
  7. melaphyre,
  8. melasma,
  9. melasma universale,
  10. melatonin

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.