noun

(1) The condition of being dissociated into ions (as by heat or radiation or chemical reaction or electrical discharge

(2) 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

(3) The condition of being dissociated into ions (as by heat or radiation or chemical reaction or electrical discharge)

(4) The process of ionizing

(5) 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