The accumulation of purulent urine in the pelvis and calices of the kidneys, usually the result of bacterial infection following obstruction of the ureter.

Nearby words

  1. hydropneumothorax,
  2. hydroponics,
  3. hydropower,
  4. hydrops,
  5. hydropsy,
  6. hydroquinone,
  7. hydrorhiza,
  8. hydrorrhea,
  9. hydrorrhea gravidarum,
  10. hydros.

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