maple syrup urine disease

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maple syrup urine disease

[′mā·pəl ¦sir·əp ′yu̇r·ən di‚zēz]
(medicine)
A hereditary metabolic disorder caused by deficiency of branched-chain keto acid decarboxylase; characterized by the maple-syrup-like odor of urine. Also known as branched-chain ketoaciduria.