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  1. Oxford American Dictionary

    ion

    • IPA[ˈīən]

    美式

    • n.
      an atom or molecule with a net electric charge due to the loss or gain of one or more electrons

    • noun: ion, plural noun: ions

    • 釋義

    名詞

    • 1. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons hydrogen ions a sulfate ion