Phenylketonuria
WordNet
noun
(1) A genetic disorder of metabolism; lack of the enzyme needed to turn phenylalanine into tyrosine results in an accumulation of phenylalanine in the body fluids which causes various degrees of mental deficiency
WiktionaryText
Noun
- a metabolic disorder in which individuals lack the liver enzyme phenylalanine hydroxylase (PAH) which is needed to metabolize the amino acid phenylalanine