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Từ điển Oxford Advanced Learner 8th
ion
ion [ion ions] BrE [ˈaɪən] NAmE [ˈaɪən] BrE [ˈaɪɒn] NAmE [ˈaɪɑːn] noun (physics or chemistry)
an atom or a ↑molecule with a positive or negative electric charge caused by its losing or gaining one or more ↑electrons
Word Origin:
mid 19th cent.: from Greek, neuter present participle of ienai ‘go’.
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