from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A semisolid compound, C5H4N4O3, that is a nitrogenous end product of protein and purine metabolism and is the chief nitrogenous component of the urine in birds, terrestrial reptiles, and insects.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry a
bicyclic heterocyclic phenolic compound, formed in the bodyby the metabolismof proteinand excretedin the urine(or in avian faeces)
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a white tasteless odorless crystalline product of protein metabolism; found in the blood and urine
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