Definition that contains mental deficiency
- feeblemindedness severe mental deficiency
- pku 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
- williams syndrome a rare congenital disorder associated with deletion of genetic material in chromosome 7; characterized by mental deficiency and some growth deficiency and elfin faces but an overly social personality and a remarkable gift for vocabulary
- phenylketonuria 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