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TOEFL BNC: 6303 COCA: 10273

ion

2 ENTRIES FOUND:
ion /ˈaɪˌɑːn/ /ˈajən/ noun
plural ions
ion
/ˈaɪˌɑːn/ /ˈajən/
noun
plural ions
Learner's definition of ION
[count] technical
: an atom or group of atoms that has a positive or negative electric charge from losing or gaining one or more electrons离子

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