MEANING
1. An electrode at which reduction occurs in an electrochemical cell.
2. In a vacuum tube, an electrode that emits electrons; in a diode, the conventional-current exit terminal.
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Words that belong together
- battery cathode
- cathode surface
On the page
The cathode surface showed a deposit no one had expected.
A damaged battery cathode left the backup system unable to hold charge.
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Word forms
- Base
- cathode
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Usage notes
Primary category: sci-fi. Forms: Singular cathode; plural cathodes. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.
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