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Definition of Anion
Anion: A negatively charged ion. Pronounced an-I-on.
An anion is as opposed to a cation, which is a positively charged ion.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=20153
Last Editorial Review: 3/29/2002 6:53:11 AM
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