Definitions for ureayʊˈri ə, ˈyʊər i ə
Random House Webster's College Dictionary
u•re•ayʊˈri ə, ˈyʊər i ə(n.)
a compound, CO(NH2)2, occurring in urine and other body fluids as a product of protein metabolism.
a water-soluble powder form of this compound, used as a fertilizer, animal feed, in the synthesis of plastics, resins, and barbiturates, and in medicine as a diuretic.
Origin of urea:
1800–10; < NL < F urée; ult. < Gk oûron urine or oureîn to urinate; see uro -1
the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics
A water-soluble organic compound, CO(NH), formed by the metabolism of proteins and excreted in the urine.
Any N-substituted derivative of urea, with the general formula (RRN)CO(NRR).
Origin: from urée, from οὖρον.
a very soluble crystalline body which is the chief constituent of the urine in mammals and some other animals. It is also present in small quantity in blood, serous fluids, lymph, the liver, etc
U.S. National Library of Medicine
A compound formed in the liver from ammonia produced by the deamination of amino acids. It is the principal end product of protein catabolism and constitutes about one half of the total urinary solids.