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Pronunciation: kath′ōd

Definition: The negative pole of a galvanic battery or the electrode connected with it; the electrode toward which positively charged ions (cations) migrate and are reduced, and into which electrons are fed from their source (anode or generator).

Synonym(s): negative electrode

[G. kathodos, a way down, fr. kata, down, + hodos, a way]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.