urea

[ yoo-ree-uh, yoor-ee-uh ]

/ yʊˈri ə, ˈyʊər i ə /

noun

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

Chemistry. 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.

Origin of urea

1800–10; <New Latin <French urée; ultimately <Greek oûron urine or oureîn to urinate; see uro-¹

OTHER WORDS FROM urea

u·re·al, u·re·ic, adjective

Words nearby urea

urchin, urd, urdé, Urdu, URE, urea, urea clearance, urea cycle, urea-formaldehyde resin, urea frost, ureagenesis

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for urea

The seizing of the urea by the kidney cell is a vital phenomenon which we must waive for the moment.
The Story of the Living Machine|H. W. Conn
To the Editor:—Could you tell me why quinin and urea hydrochlorid has not become more popular for local anesthesia?
The Propaganda for Reform in Proprietary Medicines, Vol. 2 of 2|Various
As we have seen, the urea is very slightly lower; but after much exertion the uric acid is increased.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley
In Gout and Lithiasis there is an excess in the system of nitrogenous matter, and thus a tendency to an extra formation of urea.
The Action of Medicines in the System|Frederick William Headland

Besides solutions containing ammonium salts and urea, I have succeeded in nitrifying solutions of asparagine, milk, and rape cake.
Scientific American Supplement, Vol. XIX, No. 470, Jan. 3, 1885|Various

British Dictionary definitions for urea

urea

/ (ˈjʊərɪə) /

noun

a white water-soluble crystalline compound with a saline taste and often an odour of ammonia, produced by protein metabolism and excreted in urine. A synthetic form is used as a fertilizer, animal feed, and in the manufacture of synthetic resins. Formula: CO(NH 2) 2Also called: carbamide

Derived forms of urea

ureal or ureic, adjective

Word Origin for urea

C19: from New Latin, from French urée, from Greek ouron urine

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for urea (1 of 2)

urea

[ yu-rē′ə ]

n.

A water-soluble compound that is the major nitrogenous end product of protein metabolism and is the chief nitrogenous component of the urine in mammals and other organisms.carbamide

Medical definitions for urea (2 of 2)

urea-

pref.

Urea; urine:ureapoiesis.

Scientific definitions for urea

urea

[ yu-rē′ə ]

The chief nitrogen-containing waste product excreted in the urine of mammals and some fish. It is the final nitrogenous product in the breakdown of proteins by the body, during which amino groups (NH2) are removed from amino acids and converted into ammonium ions (NH4), which are toxic at high concentrations. The liver then converts the ammonium ions into urea. Urea is also made artificially for use in fertilizers and medicine. Chemical formula: CON2H4.

单词	urea
释义	urea [ yoo-ree-uh, yoor-ee-uh ] / yʊˈri ə, ˈyʊər i ə / noun Biochemistry. a compound, CO(NH2)2, occurring in urine and other body fluids as a product of protein metabolism. Chemistry. 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. Origin of urea 1800–10; <New Latin <French urée; ultimately <Greek oûron urine or oureîn to urinate; see uro-¹ OTHER WORDS FROM urea u·re·al, u·re·ic, adjective Words nearby urea urchin, urd, urdé, Urdu, URE, urea, urea clearance, urea cycle, urea-formaldehyde resin, urea frost, ureagenesis Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for urea The seizing of the urea by the kidney cell is a vital phenomenon which we must waive for the moment. The Story of the Living Machine\|H. W. Conn To the Editor:—Could you tell me why quinin and urea hydrochlorid has not become more popular for local anesthesia? The Propaganda for Reform in Proprietary Medicines, Vol. 2 of 2\|Various As we have seen, the urea is very slightly lower; but after much exertion the uric acid is increased. Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I\|Arnold Cooley In Gout and Lithiasis there is an excess in the system of nitrogenous matter, and thus a tendency to an extra formation of urea. The Action of Medicines in the System\|Frederick William Headland Besides solutions containing ammonium salts and urea, I have succeeded in nitrifying solutions of asparagine, milk, and rape cake. Scientific American Supplement, Vol. XIX, No. 470, Jan. 3, 1885\|Various British Dictionary definitions for urea urea / (ˈjʊərɪə) / noun a white water-soluble crystalline compound with a saline taste and often an odour of ammonia, produced by protein metabolism and excreted in urine. A synthetic form is used as a fertilizer, animal feed, and in the manufacture of synthetic resins. Formula: CO(NH 2) 2Also called: carbamide Derived forms of urea ureal or ureic, adjective Word Origin for urea C19: from New Latin, from French urée, from Greek ouron urine Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for urea (1 of 2) urea [ yu-rē′ə ] n. A water-soluble compound that is the major nitrogenous end product of protein metabolism and is the chief nitrogenous component of the urine in mammals and other organisms.carbamide Medical definitions for urea (2 of 2) urea- pref. Urea; urine:ureapoiesis. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for urea urea [ yu-rē′ə ] The chief nitrogen-containing waste product excreted in the urine of mammals and some fish. It is the final nitrogenous product in the breakdown of proteins by the body, during which amino groups (NH2) are removed from amino acids and converted into ammonium ions (NH4), which are toxic at high concentrations. The liver then converts the ammonium ions into urea. Urea is also made artificially for use in fertilizers and medicine. Chemical formula: CON2H4. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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