IONIZATION
ionization, ionisation
(noun) the process of ionizing; the formation of ions by separating atoms or molecules or radicals or by adding or subtracting electrons from atoms by strong electric fields in a gas
ionization, ionisation
(noun) the condition of being dissociated into ions (as by heat or radiation or chemical reaction or electrical discharge); “the ionization of a gas”
Source: WordNet® 3.1
Etymology
Noun
ionization (plural ionizations)
(chemistry, physics) Any process that leads to the dissociation of a neutral atom or molecule into charged particles ions; the state of being ionized.
Source: Wiktionary