单词	anion
释义	anion /ˈanʌɪən / noun Chemistry A negatively charged ion, i.e. one that would be attracted to the anode in electrolysis. The opposite of cation.When two atoms swap electrons to produce a cation and an anion, the two ions are attracted to each other.... During electrolysis an anion is attracted to the anode (positive electrode). In an ionic compound there are two different types of ions present, the positively charged cations and the negatively charged anions. Derivatives anionic adjective ... An example of an anionic emulsifier is stearic acid. The development of both cationic and anionic exchange materials did not occur until 1935. The anionic lipids promote faster adsorption whether present in the bilayer vesicles or in the surface monolayer. Origin Mid 19th century: from anode or ana-, + ion.
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