Definition of urea noun from the Oxford Advanced Learner's Dictionary

 

urea

 noun
noun
BrE BrE//jʊˈriːə//
 
; NAmE NAmE//jʊˈriːə//
 
[uncountable](specialist)
 
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a clear substance containing nitrogen that is found especially in urine Word Origin early 19th cent.: modern Latin, from French urée, from Greek ouron ‘urine’.
See the Oxford Advanced American Dictionary entry: urea