In mammals, a fluid excretion from the kidneys; in birds and reptiles, a solid or semisolid excretion.

A mixture of waste products and water produced by the kidneys.

The fluid secreted by the kidney's transported by the ureters, stored in the bladder and voided by the urethra.

The fluid excreted by the kidneys, passed through the ureters, stored in the bladder, and discharged through the urethra. Urine, in health, has an amber color, a slight acid reaction, a peculiar odor, and a bitter, saline taste.