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urea

[yoo-ree-uh, yoo r-ee-uh]
noun
  1. Biochemistry. a compound, CO(NH2)2, occurring in urine and other body fluids as a product of protein metabolism.
  2. 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.
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Origin of urea

1800–10; < New Latin < French urée; ultimately < Greek oûron urine or oureîn to urinate; see uro-1
Also called carbamide.
Related formsu·re·al, u·re·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ureal

Historical Examples of ureal

  • There is edema of the ureal tract, apparently from transudation of serum.

    Glaucoma

    Various


British Dictionary definitions for ureal

urea

noun
  1. 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
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Derived Formsureal 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

Word Origin and History for ureal

urea

1806, Latinized from French urée (1803), from Greek ouron "urine" (see urine).

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Online Etymology Dictionary, © 2010 Douglas Harper

ureal in Medicine

urea

(yu-rēə)
n.
  1. 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
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

ureal in Science

urea

[yu-rēə]
  1. 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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.