deionize

verb5

1. •
   To remove the ions from; to deprive of ions.
2. •
   To remove the ionic constituents from (a liquid, e.g. water).

   • Water can be deionized using ion exchange resins.
3. •
   To be deprived of ions.
4. •
   To cause (an ionized substance) to return to a neutral state; to convert (an ion) into a neutral atom or molecule.
5. •
   Of an ionized substance, to return to a neutral state.