柯林斯词典cation /ˈkætaɪən/ 1. N a positively charged ion; an ion that is attracted to the cathode during electrolysis 陽離子→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 陽離子，正離子（帶有正電荷的離子，電解反應中曏電池隂極移動） 返回 cation