ion
  離子
  ion
  離子
  -ion  A noun suffix denoting act, process, result of an act or a process, thing acted upon, state, or condition; as, revolution, the act or process of revolving; construction, the act or process of constructing; a thing constructed; dominion, territory ruled over; subjection, state of being subject; dejection; abstraction.
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  ion
       n : a particle that is electrically charged (positive or
           negative); an atom or molecule or group that has lost or
           gained one or more electrons