deionise

Verb

deionize (third-person singular simple present deionizes, present participle deionizing, simple past and past participle deionized)

1. (physical, transitive) To cause (an ionized substance) to return to a neutral state; to convert (an ion) into a neutral atom or molecule.

   Synonyms:

   unionize

   Antonyms:

   ionize

2. (physical, transitive) To remove the ionic constituents from (a liquid, e.g. water).
   • Water can be deionized using ion exchange resins.
3. (intransitive, physical) To be deprived of ions.
   1. (intransitive, physical) Of an ionized substance, to return to a neutral state.
      • Sparks have been made with durations as light sources down to a few nanoseconds, the advantage being that the ionized gas which created the light can deionize and dissipate its heat sufficiently quickly whereas a discharge in gases like xenon in a bottle deionizes and dissipates more slowly.1981 June 25, George H. Lunn, “High-speed photography”, in Nature, volume 291, →DOI, page 618