Urea (noun)

1. A colorless, odorless, crystalline compound that is the main nitrogenous waste product in the urine of mammals and the primary source of nitrogen in animal urine.
2. A widely used industrial chemical, especially as a nitrogen source in fertilizers and animal feed.

Origin:

From the german word "harnstoff" meaning "urine compound".

Examples:

1. Urea is a normal component of urine and blood and is produced by the liver.
2. Urea is a byproduct of protein metabolism and is excreted by the kidneys.
3. Urea is used as a nitrogen source in many types of fertilizers.
4. Urea is also used in the manufacture of plastics, resins, and adhesives.
5. Urea is an important intermediate in the metabolism of nitrogen-containing compounds by plants and animals.