Source : Webster's Revised Unabridged Dictionary (1913)

Vinification \Vin`i*fi*ca"tion\, n. [L. vinum wine + E.
   -fication.]
   The conversion of a fruit juice or other saccharine solution
   into alcohol by fermentation.

Source : WordNet®

vinification
     n : the process whereby fermentation changes grape juice into
         wine