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doc Definition of xanthine
    English to English
    noun
  • crystalline oxidation product of the metabolism of nucleoproteins; precursor of uric acid; found in many organs and in urine
  • source: WordNet 3.0
  • A white microcrystalline nitrogenous compound, C5H4O2N4, present in muscle tissue, in the liver, spleen, pancreas, and other organs, and also in urine (in small quantities) and some urinary calculi, and in the juices of certain plants; -- so called because it leaves a yellow residue when evaporated to dryness with nitric acid. Xanthine is closely related to uric acid.
  • source: Webster 1913
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