Definitions for: Cathode


[n] a negatively charged electrode that is the source of electrons in an electrical device
[n] the positively charged terminal of a voltaic cell or storage battery that supplies current



Webster (1913) Definition: Cath"ode, n. [Gr. ? descent; ? down + ? way.]
(Physics)
The part of a voltaic battery by which the electric current
leaves substances through which it passes, or the surface at
which the electric current passes out of the electrolyte; the
negative pole; -- opposed to anode. --Faraday.

Cathode ray (Phys.), a kind of ray generated at the cathode
in a vacuum tube, by the electrical discharge

Antonyms: anode

See Also: accumulator, depot, electrode, electrolytic cell, electron tube, galvanic cell, photocathode, primary cell, storage battery, terminal, terminus, thermionic tube, thermionic vacuum tube, thermionic valve, tube, vacuum tube, voltaic cell

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