Definitions for ureayʊˈri ə, ˈyʊər i ə

This page provides all possible meanings and translations of the word urea

Random House Webster's College Dictionary

u•re•ayʊˈri ə, ˈyʊər i ə(n.)

  1. a compound, CO(NH2)2, occurring in urine and other body fluids as a product of protein metabolism.

    Category: Biochemistry

  2. 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.

    Category: Chemistry

Origin of urea:

1800–10; < NL < F urée; ult. < Gk oûron urine or oureîn to urinate; see uro -1

u•re′al(adj.)

u•re′ic(adj.)

Princeton's WordNet

  1. urea, carbamide(noun)

    the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics

Wiktionary

  1. urea(Noun)

    A water-soluble organic compound, CO(NH), formed by the metabolism of proteins and excreted in the urine.

  2. urea(Noun)

    Any N-substituted derivative of urea, with the general formula (RRN)CO(NRR).

  3. Origin: from urée, from οὖρον.

Webster Dictionary

  1. Urea(adj)

    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

Freebase

  1. Urea

    Urea or carbamide is an organic compound with the chemical formula CO(NH2)2. The molecule has two —NH2 groups joined by a carbonyl (C=O) functional group. Urea serves an important role in the metabolism of nitrogen-containing compounds by animals and is the main nitrogen-containing substance in the urine of mammals. It is a colorless, odorless solid, highly soluble in water and practically non-toxic (LD50 is 15 g/kg for rat). Dissolved in water, it is neither acidic nor alkaline. The body uses it in many processes, the most notable one being nitrogen excretion. Urea is widely used in fertilizers as a convenient source of nitrogen. Urea is also an important raw material for the chemical industry. The discovery by Friedrich Wöhler in 1828 that urea can be produced from inorganic starting materials was an important conceptual milestone in chemistry, as it showed for the first time that a substance previously known only as a byproduct of life could be synthesized in the lab without any biological starting materials, contradicting the widely held doctrine of vitalism.

U.S. National Library of Medicine

  1. Urea

    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.

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