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1. A negatively charged electrode that is the source of electrons entering an electrical device
    
2. The positively charged terminal of a voltaic cell or storage battery that supplies current

Derived forms: cathodes

See also: cathodic

Type of: depot, electrode, terminal, terminus

Antonym: anode

Part of: accumulator, electrolytic cell, electron tube, galvanic cell, primary cell, storage battery, thermionic tube, thermionic vacuum tube, thermionic valve, tube, vacuum tube, voltaic cell

Encyclopedia: Cathode