Pronunciation: (dē-mon'i-tīz", -mun'-),[key] —v.t.,-tized, -tiz•ing. 1. to divest (a monetary standard or the like) of value.
2. to withdraw (money or the like) from use.
3. to deprive (an issue of postage stamps) of validity by legal methods and without marking the stamps themselves. Also,esp. Brit.,de•mon'e•tise".