Urea
noun
-
A water-soluble organic compound, CO(NH2)2, formed by the metabolism of proteins and excreted in the urine.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
Any N-substituted derivative of urea, with the general formula (R1R2N)CO(NR3R4).
from Wiktionary, Creative Commons Attribution/Share-Alike License
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