- The organs and passages of the urinary tract.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- The system of organs and tissues involved with regulation of water content and salt concentration in the body and with the excretion of metabolic wastes and excess water and salt in the form of urine. In mammals, the urinary system consists of the urinary tract and associated tissues.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.