English dictionary
xanthin
/'z/&/n/T//I/n/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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A crystalline nitrogenous body closely related to both uric acid and hypoxanthin, present in muscle tissue, and occasionally found in the urine and in some urinary calculi. It is also present in guano. So called from the yellow color of certain of its salts (nitrates).
Source: webster1913