Source : Webster's Revised Unabridged Dictionary (1913)

Ethane \Eth"ane\, n. [From {Ether}.] (Chem.)
   A gaseous hydrocarbon, {C2H6}, forming a constituent of
   ordinary illuminating gas. It is the second member of the
   paraffin series, and its most important derivatives are
   common alcohol, aldehyde, ether, and acetic acid. Called also
   {dimethyl}.

Source : WordNet®

ethane
     n : a colorless odorless alkane gas used as fuel [syn: {C2H6}]