Source : Webster's Revised Unabridged Dictionary (1913)

Diallyl \Di*al"lyl\, n. (Chem.)
   A volatile, pungent, liquid hydrocarbon, {C6H10}, consisting
   of two allyl radicals, and belonging to the acetylene series.

Hexine \Hex"ine\, n. [Gr. "e`x six.] (Chem.)
   A hydrocarbon, {C6H10}, of the acetylene series, obtained
   artificially as a colorless, volatile, pungent liquid; --
   called also {hexoylene}.