Source : Webster's Revised Unabridged Dictionary (1913)

Magnetization \Mag`net*i*za"tion\, n.
   The act of magnetizing, or the state of being magnetized.

Source : WordNet®

magnetization
     n 1: the extent or degree to which something is magnetized [syn:
          {magnetisation}]
     2: the process that makes a substance magnetic (temporarily or
        permanently) [syn: {magnetisation}, {magnetic induction}]
     3: the physical property of being magnetic [syn: {magnetisation}]