| xanthiuria | 1. Excretion of abnormally large amounts of xanthine in the urine. 2. A disorder resulting from defective synthesis of xanthine oxidase, characterised by urinary excretion of xanthine in place of uric acid, hypouricaemia, and, in some cases, the formation of xanthine stones; autosomal recessive inheritance. Synonym: xanthiuria, xanthuria. Origin: xanthine + G. Ouron, urine (05 Mar 2000) |
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