What does hexose mean?
Hexose denotes any monosaccharide whose molecules contain six carbon atoms. Unlike names such as glucose or fructose, which identify particular carbohydrates, “hexose” is a chemical category based on carbon number. Hexoses include aldohexoses and ketohexoses and are central to carbohydrate metabolism. In biochemical and nutritional writing, the term signals a specific structural property rather than one isolated compound. Glucose, for example, is an aldohexose, while fructose is a ketohexose. The word is specialized and most often encountered in technical descriptions of sugars, enzyme pathways, transport systems, and laboratory analysis. Even so, it is a useful name because it immediately identifies the six-carbon framework of a carbohydrate, providing context that a specific sugar name alone does not. Understanding the term helps readers interpret chemical formulas and compare hexoses with pentoses and other monosaccharide classes. It is also a concise reminder that familiar dietary and biochemical sugars can be grouped systematically according to structure.
nounAny monosaccharide whose molecules contain six carbon atoms. Hexoses include both aldohexoses, such as glucose, and ketohexoses, such as fructose.
- A monosaccharide composed of six carbon atoms.
"Glucose is the most biologically important hexose in human metabolism."
"Glucose is the most biologically important hexose in human metabolism."
"Researchers identified a hexose transporter that helps certain cancer cells take up sugar."
Used when referring to several monosaccharides with a six-carbon framework.
"The researchers compared the metabolism of three major hexoses."
Glucose and fructose have different structures, but both belong to the six-carbon hexose family.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does hexose come from?
The word combines the Greek numeral hexa, meaning “six,” with the scientific suffix -ose, used in the names of sugars. It developed within nineteenth-century carbohydrate nomenclature to identify monosaccharides containing six carbon atoms. Related words such as hexagon, hexahedron, and hexameter reflect the same Greek root for “six.”
Related word forms
How hexose is actually used
A specialized term used chiefly in biochemistry, nutrition, medicine, and carbohydrate chemistry. It normally appears in lowercase and is more technical than the general term “sugar.”