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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 xan·thine /ˈzænˌθin/
 黃色色素

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 xan·thine /ˈzænˌθɪn/ 名詞
 黃質,黃嘌呤

From: Webster's Revised Unabridged Dictionary (1913)

 Xan·thine n. Also Xan·thin .  Physiol. Chem. A type of purine obtainable as a white microcrystalline powder, 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. It is also present in guano.  Xanthine is closely related to uric acid.
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From: WordNet (r) 2.0

 xanthine
      n : crystalline oxidation product of the metabolism of
          nucleoproteins; precursor of uric acid; found in many
          organs and in urine