柯林斯词典cation /ˈkætaɪən/ 1. N a positively charged ion; an ion that is attracted to the cathode during electrolysis 阳离子→compare anion 返回 cation剑桥词典in chemistry , an ion (= type of atom ) that has a positive electric charge and therefore moves towards the cathode (= negative part of electric cell ) during electrolysis 阳离子，正离子（带有正电荷的离子，电解反应中向电池阴极移动） 返回 cation