urea

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The urea must be replenished at service intervals - generally 10,000 miles - and now Mercedes acknowledges the vehicles won't start if the urea is allowed to run out.

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Definitions (7)

Toggle American Heritage definitions American Heritage Dictionary (1)

  1. 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 other organisms. Also called carbamide.

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Examples (50)

  • Soon I became the star of the laboratory Sophisticated tests revealed that in deep sleep my body effortlessly recycles urea, accounting both for the fact that I don't die of uremic poisoning and that I am able to synthesize new proteins continuously, thus maintaining muscle mass. —  FSF - March2006
  • Another important function of the liver is to produce substances that break down fats, convert glucose to glycogen, and converts ammonia into urea, which is the main substance of urine. —  CreationWiki - Recent changes [en]
  • It changes food into energy, cleans poisons from the blood whether ingested or inhaled, makes bile to help in the digestion of food, produces substances that break down fats, converts glucose to glycogen, and converts ammonia into urea, which is the main substance of urine. —  CreationWiki - Recent changes [en]
  • Ocean fertilisation with iron or nitrogen compounds such as urea has been put forward as a means to slow down climate change. —  Climate Ark Climate Change & Global Warming RSS Newsfeed
  • DEF as a spec is made from urea, a common ammonia-based chemical used to eliminate NOx when injected into the hot exhaust gas downstream of the diesel particulate filter (DPF).
 

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This word has been looked up 71 times.

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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. New Latin, from French urée, from urine, urine, from Old French, from Latin ūrīna; see urine.

Toggle Century etymologies Century Dictionary (1)

  1. New Latin, from Greek οὐρον, urine: see urine.
 

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/ˈjuriə/
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