urine
n. uncountablen. the yellow liquid that your body gets rid of when you go to the bathroom. It is mostly water and waste products from your blood.
n. the liquid waste product filtered from the blood by the kidneys and excreted through the urethra. Primarily composed of water, urea, and inorganic salts.
The doctor asked for a urine sample to check for infection.
Healthy kidneys filter waste from the blood and produce urine to maintain the body's chemical balance.
Forensic analysts examined the chemical composition of the urine found at the scene to determine if the suspect had been under the influence of specific medications.
From Middle English uryne, from Latin ūrīna (“urine”), from Proto-Indo-European uh₁r-, zero grade of woh₁-r̥ (“water, liquid, milk”). Related to *h₁ówHdʰr̥ (“udder”) (see udder). Cognate with Old English ūriġ (“wet, moist”). Displaced native English land (“urine”) (from Middle English land, from Old English hland (“urine”)), though lant survives with a specialized sense.
Uncountable when referring to the substance in general; occasionally countable in medical contexts when referring to specific samples.