Meaning & use
anion
An ion with a negative electrical charge, formed when an atom gains one or more electrons.
See it in a sentence
Chloride is a common anion found in table salt and seawater.
During the reaction, the anion moved toward the positively charged electrode.
A note on using this word
Anion is the opposite of cation, which carries a positive charge; both terms are used in chemistry and physics.
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