Meaning | A negatively charged electrode that is the source of electrons entering an electrical device. |
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Part of | electrolytic cell | A cell containing an electrolyte in which an applied voltage causes a reaction to occur that would not occur otherwise (such as the breakdown of water into hydrogen and oxygen) |
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tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve | electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope |
Narrower | cold cathode | A cathode that is a source of electrons without being heated |
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photocathode | A cathode that emits electrons when illuminated |
Broader | electrode | A conductor used to make electrical contact with some part of a circuit |
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Opposite | anode | A positively charged electrode by which electrons leave an electrical device |
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Spanish | catodo, cátodo |
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Catalan | catode, càtode |
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Adjectives | cathodic | of or at or pertaining to a cathode / cathode |
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