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Noun cathode has 2 senses
  1. cathode - a negatively charged electrode that is the source of electrons in an electrical device
    --1 is a kind of     electrode
    --1 is a part of
     electrolytic cell; tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve
     Antonyms: anode
    --1 has particulars: photocathode
  2. cathode - the positively charged terminal of a voltaic cell or storage battery that supplies current
    --2 is a kind of     terminal, terminus, depot
    --2 is a part of
     storage battery, accumulator; voltaic cell, galvanic cell, primary cell
     Antonyms: anode
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