deionize

• de-ionize, deionise, de-ionise

From de- +‎ ionize.

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

1. (transitive, physical chemistry) To remove the ions from; to deprive of ions.
   1. To cause (an ionized substance) to return to a neutral state; to convert (an ion) into a neutral atom or molecule.

      Synonym: (rare) unionize

      Antonym: ionize

   2. To remove the ionic constituents from (a liquid, e.g. water).

      Water can be deionized using ion exchange resins.

2. (intransitive, physical chemistry) To be deprived of ions.
   1. Of an ionized substance, to return to a neutral state.

      Synonym: (rare) unionize

      • 1981 June 25, George H. Lunn, “High-speed photography”, in Nature, volume 291, →DOI, page 618:

        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.

      • 2021 October, Islam M. Minisy, Nehal A. Salahuddin, Mohamad M. Ayad, “In vitro release study of ketoprofen-loaded chitosan/polyaniline nanofibers”, in Polymer Bulletin, volume 78, →DOI, page 5616:

        In the acidic medium at pH 2.0, amino, imino and hydroxyl groups of the hybrid are protonated and KP [ketoprofen] deionizes and becomes less soluble ; this leads to a decrease in the release rate and percentage of KP.