[ guh-lak-tuh-see-mee-uh ]
/ gəˌlæk təˈsi mi ə /

noun Pathology.

an inherited disorder characterized by the inability to metabolize galactose and requiring a galactose-free diet to avoid consequent mental retardation and eye, spleen, and liver abnormalities.

Origin of galactosemia

First recorded in 1930–35; galactose + -emia
Related formsga·lac·to·se·mic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for galactosemia


[ gə-lăk′tə-sēmē-ə ]


An inherited metabolic disorder characterized by the deficiency of an enzyme necessary for galactose metabolism and characterized by elevated levels of galactose in the blood and, if untreated, mental retardation and eye and liver abnormalities.

Related formsga•lac′to•semic adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.