(ăn′ī-ŏn)
[Pronunciation]
[Gr. ana, up, + ion, going]

An ion carrying a negative charge; the opposite of cation.
An anion is attracted by, and travels to, the anode (positive pole). Examples are acid radicals and corresponding radicals of their salts.

See: electrolyte; ion
anionic, (ăn″ī-ŏn′ĭk)
[Pronunciation]
adj.