Source : Webster's Revised Unabridged Dictionary (1913)

Mannitol \Man"ni*tol\, n. [Mannite + -ol.] (Chem.)
   The technical name of mannite. See {Mannite}.

Source : WordNet®

mannitol
     n : a diuretic (trade name Osmitrol) used to promote the
         excretion of urine [syn: {Osmitrol}]