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May 22, 2013
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Definition of Cation

Cation: In chemistry, a positively charged ion. Pronounced cat-I-on.

A cation is as opposed to an anion, which is a negatively charged ion.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=20152
Last Editorial Review: 6/14/2012

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