A white crystalline hexose (
HO.CH2.(CHOH)4.CH2.OH) of a sweet taste obtained from a so-called
manna, the dried sap of the flowering ash (
Fraxinus ornus); -- called also
mannite, and
hydroxy hexane. Cf.
Dulcite. It is used in pharmacy as excipient and diluent for solids and liquids. It is also used as a food additive for anti-caking properties, or as a sweetener, and, illegally, to "cut" (dilute) illegal drugs such as cocaine or heroin. [
1913 Webster]