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Noun ionisation has 2 senses
- ionization, ionisation - the condition of being dissociated into ions (as by heat or radiation or chemical reaction or electrical discharge); "the ionization of a gas"
--1 is a kind of condition, status
- ionization, ionisation - 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
--2 is a kind of natural process, natural action, action, activity
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