Wikipedia 10K Redux by Reagle from Starling archive. Bugs abound!!!

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An [[organic compound]] of [[carbon]], [[nitrogen]], [[oxygen]] and [[hydrogen]], with the formula CO(NH2)2

In many land animals, it is the main end product of the metabolism of nitrogen-containg compounds, and is excreted in the urine. 

Urea was discovered by H.M. Rouell in 1773. It was the first organic compound to be artificially synthesised in 1828 by Friedrich Wohler, who prepared it by the reaction of potassium cyanate with ammonium sulphate, thereby starting the 
discipline of [[Organic Chemistry|organic chemistry]] 

Principal uses:
The manufacture of [[plastics]] (specifically, urea-formaldehyde resin) 

?? other uses besides to be added