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ion

2 ENTRIES FOUND:
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ion/ˈaɪˌɑːn, ˈajən/noun
pluralions
ion
/ˈaɪˌɑːn, ˈajən/
noun
pluralions
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
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