Pronunciation: (yoo-rē'u, yoor'ē-u), [key]
1. Biochem.a compound, CO(NH2)2, occurring in urine and other body fluids as a product of protein metabolism.
2. Chem.a water-soluble powder form of this compound, obtained by the reaction of liquid ammonia and liquid carbon dioxide: used as a fertilizer, animal feed, in the synthesis of plastics, resins, and barbiturates, and in medicine as a diuretic and in the diagnosis of kidney function. Also called carbamide.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

UREurea cycle
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