Methylmalonic aciduria
methylmalonic aciduria meth·yl·ma·lo·nic aciduria (měth’əl-mə-lō’nĭk, -lŏn’ik)
n.
A metabolic disorder resulting from an enzyme deficiency and characterized by the presence of excessive amounts of methylmalonic acid in the urine; it can be congenital or acquired because of a vitamin B12 deficiency.
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