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English definition of “ionize”

ionize

verb [I or T] specialized (UK usually ionise)     /ˈaɪ.ə.naɪz/
to ( cause to) form an ion Physical and chemical processes ionized (UK usually ionised)     /-naɪzd/ adjective Nebulae contain very large amounts of ionized gas .Atoms, molecules and sub-atomic particles ionization (UK usually ionisation)     /ˌaɪ.ə.naɪˈzeɪ.ʃən/ noun [U] Widespread ionization occurs readily in the Earth's upper atmosphere .Physical and chemical processes
(Definition of ionize verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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