noun.
Formerly a general designation for compounds similar to glycerol in that they contain three hydroxyl groups.
noun.
A transparent, colorless, hygroscopic liquid (C3H5(OH)3), with a sweet taste and syrupy consistence.
the GNU version of the Collaborative International Dictionary of English
noun.
An oily, viscous liquid, C3H5(OH)3, colorless and odorless, and with a hot, sweetish taste, existing in the natural fats and oils as the base, combined with various acids, as oleic, margaric, stearic, and palmitic. It may be obtained by saponification of fats and oils. It is a triatomic alcohol, and hence is also called glycerol. See Note under gelatin.