Definition of cathode
1 : the electrode of an electrochemical cell at which reduction occurs:a : the negative terminal of an electrolytic cellb : the positive terminal of a galvanic cell
2 : the electron-emitting electrode of an electron tube; broadly : the negative electrode of a diode — compare anode
cathodalplay \ˈka-ˌthō-dəl\ adjective
cathodicplay \ka-ˈthä-dik, -ˈthō-\ adjective
cathodicallyplay \-di-k(ə-)lē\ adverb
Recent Examples of cathode from the Web
Perhaps most importantly, when paired with a vanadium oxide cathode, the energy density was just over 500 Watt-hours per kilogram.
The screen and speaker wrapped in a chunky trapezoid of plastic have more in common with the cathode-ray TVs your parents grew up with than any gadget from this decade.
Those electrodes circle back to the cathode, giving energy to a circuit which starts the process over again.
The Prieto battery still relies on the main concept of a battery — the negative (anode) and positive (cathode) sides of the battery swap electrons to produce energy.
Sheets with the cathodes and anodes are rolled with seperaters into canisters that resemble metal hair spray bottles.
Consumers have found that no-cost options for dumping electronics, such as computer monitors and TVs with cathode ray tubes have dwindled as a result.
Electricity is generated by the exchange of ions between the cathode and anode.
Its Mentor factory will make anodes and cathodes for the electrochemical industry.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cathode'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of cathode
Greek kathodos way down, from kata- + hodos way
First Known Use: 1834See Words from the same year
CATHODE Defined for English Language Learners
Definition of cathode for English Language Learners
: the part of an electrical device (such as a battery) where electrons enter
Medical Definition of cathode
1: the electrode of an electrochemical cell at which reduction occurs: asa: the negative terminal of an electrolytic cellb: the positive terminal of a storage battery that is delivering current
2: the electron-emitting electrode of an electron tube—compare anode
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