galactosemia[gə lak′tō sē′mē ə]
a congenital disease caused by the genetic lack of an enzyme needed to metabolize galactose into glucose and producing mental retardation, cataracts, and liver damage
Origin of galactosemiagalactos(e) + -emia
An inherited metabolic disorder characterized by the deficiency of an enzyme that is necessary for the metabolism of galactose. The disorder results in elevated levels of galactose in the blood and, if untreated, can lead to mental retardation and eye and liver abnormalities.