Source : Webster's Revised Unabridged Dictionary (1913)

Hexane \Hex"ane\, n. [Gr. "e`x six.] (Chem.)
   Any one of five hydrocarbons, {C6H14}, of the paraffin
   series. They are colorless, volatile liquids, and are so
   called because the molecule has six carbon atoms.

Source : WordNet®

hexane
     n : a colorless flammable liquid alkane derived from petroleum
         and used as a solvent