Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A water-soluble compound, CO(NH2)2, that is the major nitrogenous end product of protein metabolism and is the chief nitrogenous component of the urine in mammals and certain other animals.
from The Century Dictionary.
- noun Carbamide, CO.(NH2)2, a crystalline solid, soluble in water, and forming crystalline compounds with both acids and bases.
- noun It is the most important nitrogenous waste product of the mammalian organism. It is an acid amide, its solutions presenting a neutral reaction. It can combine with acids to form crystalline, salt-like products, and is decomposed by sodium hypobromite and the hypochlorite with the liberation of carbon dioxid, nitrogen, and water. On heating the substance ammonia is given off and biuret formed.
from the GNU version of the Collaborative International Dictionary of English.
- adjective (Physiol. Chem.) 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.
- adjective a soluble ferment formed by certain bacteria, which, however, yield the ferment from the body of their cells only after they have been killed by alcohol. It causes urea to take up water and decompose into carbonic acid and ammonia. Many different bacteria possess this property, especially
Bacterium ureæ andMicrococcus ureæ , which are found abundantly in urines undergoing alkaline fermentation.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun biochemistry A water-soluble
organic compound , CO(NH2)2, formed by themetabolism ofproteins and excreted in theurine . - noun chemistry Any N-
substituted derivative of urea, with the general formula (R1R2N)CO(NR3R4).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- 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
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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CVR Partners is planning to use a portion of the proceeds from the IPO to expand production capacity of a higher-margin nitrogen fertilizer known as urea ammonium nitrate, or UAN.
Golar LNG Partners, CVR Gain in Debuts Lynn Cowan 2011
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To get this we need to expend large amounts of energy, i.e. fossil fuels, to pull stable nitrogen out of the air and convert it to ammonia (if the fertilizer will be sprayed) and further to urea, which is a solid granule to be spread.
Global Warming and the Minefield of Unintended Consequences - Freakonomics Blog - NYTimes.com 2008
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The AdBlue system uses the SRC catalyst and a tank of liquid urea, which is misted into the exhaust stream.
How Mercedes’ BlueTec works, and the 2009 clean-diesel SUVs to come 2008
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The AdBlue system uses the SRC catalyst and a tank of liquid urea, which is misted into the exhaust stream.
How Mercedes’ BlueTec works, and the 2009 clean-diesel SUVs to come 2008
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I can cause urinary tract infections by breaking a chemical called urea into little bits.
Archive 2007-01-01 Emma Lurie 2007
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I can cause urinary tract infections by breaking a chemical called urea into little bits.
Corynebacterium urealyricum Emma Lurie 2007
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The urine is collected by the fertilizer industry from farmyard waste and refined into pure urea, which is then sold to be used in the new engine.
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And sharks, skates, and rays use a different substance: slightly salty and bitter urea, which is what animals generally turn protein waste into in order to excrete it.
On Food and Cooking, The Science and Lore of the Kitchen Harold McGee 2004
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And sharks, skates, and rays use a different substance: slightly salty and bitter urea, which is what animals generally turn protein waste into in order to excrete it.
On Food and Cooking, The Science and Lore of the Kitchen Harold McGee 2004
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In doing so, it forms a waste product called urea.
DR. SANJIV CHOPRA’S LIVER BOOK Sanjiv Chopra 2001
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