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
Low-paid inmates handle cathode ray tubes and other unsafe byproducts of the U.S. technology industry.
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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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