ionize

• POS: Verb (usu participle)
• HYPHEN: i=on=ize

CIDE DICTIONARY

ionize, v. i. 

 to dissociate into ions, as by dissolution in water or another polar solvent.  [WordNet 1.5]

ionize, v. t. 

 To convert (an atom or molecule) into ions, e. g. by dissolving in water, by reaction with acid or alkali, or by interaction with ionizing radiation. See ionization.  [Webster 1913 Suppl.]

OXFORD DICTIONARY

ionize, v.tr. & intr. (also -ise) convert or be converted into an ion or ions.

Idiom

ionizing radiation a radiation of sufficient energy to cause ionization in the medium through which it passes.

Derivative

ionizable adj.