离子交换 lízǐjiāohuàn ion exchange Origin Definitions Defs Strokes Stroke Words Sentences Sents 离子 離子 lízǐ noun ion An atom or group of atoms that has gained or lost one or more electrons and thus carries an electrical charge.交换 交換 jiāohuàn verb to exchange to exchange, swap, or interchange; to give and receive something reciprocally (such as gifts, ideas, or personnel)