• A hexose which is almost identical to glucose except that orientation of -H and -OH on carbon 4 are exchanged, making it an epimer at C-4 of glucose (in Fisher projection).
  CRCH Nutrition Terminology
  Cancer Research Center of Hawaii, University of Hawaii, 2021
• Aldohexose that occurs naturally in the D-form in lactose, cerebrosides, gangliosides, and mucoproteins.
  CRISP Thesaurus
  National Institutes of Health, 2006
• An aldohexose that occurs naturally in the D-form in lactose, cerebrosides, gangliosides, and mucoproteins. Deficiency of galactosyl-1-phosphate uridyltransferase (GALACTOSE-1-PHOSPHATE URIDYL-TRANSFERASE DEFICIENCY DISEASE) causes an error in galactose metabolism called GALACTOSEMIA, resulting in elevations of galactose in the blood.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• Galactose, a member of a group of carbohydrates known as simple sugars (monosaccharides). It is usually found in nature combined with other sugars, as, for example, in lactose (milk sugar). Galactose is also found in complex carbohydrates and in carbohydrate-containing lipids...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2020