Source : Webster's Revised Unabridged Dictionary (1913)

Maximization \Max`i*mi*za"tion\, n.
   The act or process of increasing to the highest degree.
   --Bentham.

Source : WordNet®

maximization
     n 1: the mathematical process of finding the maximum value of a
          function
     2: the act of raising to the highest possible point or
        condition or position [syn: {maximisation}, {maximation}]
        [ant: {minimization}]