What does polyol mean?
A polyol is a chemical compound containing two or more hydroxyl groups, represented as –OH. The term covers substances such as glycerol, sorbitol, and related sugar alcohols, although its precise use depends on the scientific context. In chemistry, the suffix “-ol” follows the naming conventions used for alcohols, while the prefix “poly-” indicates multiple hydroxyl groups. In biochemistry and physiology, polyols can accumulate as compatible solutes, helping cells or organisms retain water under conditions of osmotic stress. They also occur in industrial applications involving sweeteners, solvents, lubricants, and polymers. Although “polyol” may resemble words such as “polymer” or “polyether,” it specifically identifies the presence of several hydroxyl groups rather than a long repeating molecular chain or a chain of ether linkages.
nounA chemical compound containing two or more hydroxyl (–OH) groups. Polyols include glycerol, sugar alcohols, and many related organic compounds.
- An organic compound or substance containing two or more hydroxyl groups.
"The microorganism metabolizes the sugar alcohol through a polyol pathway."
"Sorbitol is a polyol widely used as a sweetener and humectant in food products."
"Researchers measured changes in intracellular polyol concentrations during osmotic stress."
The standard plural is polyols, used when referring to multiple compounds or substance types.
"Several polyols are produced during the breakdown of carbohydrates."
A polyol is essentially an alcohol with a molecular blueprint that calls for more than one hydroxyl group.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does polyol come from?
The word combines the combining form poly-, from Greek polys, meaning “many,” with the chemical suffix -ol associated with alcohol. This formation reflects the defining structural feature of these compounds: multiple hydroxyl groups. The component poly- also connects the term with many other scientific words describing substances composed of many repeated units or groups.
Related word forms
How polyol is actually used
This is a technical term used mainly in chemistry, biochemistry, pharmaceuticals, and food science. It is broader than a simple alcohol and should not be confused with a polymer merely because both terms can begin with “poly-”.
Easily confused with polyol
A polyol is characterized by hydroxyl groups, whereas a polyether is characterized by ether linkages, although a compound may contain both.