'ionisation' definitions:
Definition of 'ionisation'
(from WordNet)
noun
The condition of being dissociated into ions (as by heat or radiation or chemical reaction or electrical discharge); "the ionization of a gas" [syn: 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 [syn: ionization, ionisation]