Source : Webster's Revised Unabridged Dictionary (1913)

Demonetization \De*mon`e*ti*za"tion\, n.
   The act of demonetizing, or the condition of being
   demonetized.

Source : WordNet®

demonetization
     n : ending something (e.g. gold or silver) as no longer the
         legal tender of a country [syn: {demonetisation}] [ant: {monetization}]