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cathode

Definitions of cathode
  1. noun
    a negatively charged electrode that is the source of electrons entering an electrical device
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    Antonyms:
    anode
    a positively charged electrode by which electrons leave an electrical device
    types:
    cold cathode
    a cathode that is a source of electrons without being heated
    photocathode
    a cathode that emits electrons when illuminated
    type of:
    electrode
    a conductor used to make electrical contact with some part of a circuit
  2. noun
    the positively charged terminal of a voltaic cell or storage battery that supplies current
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    Antonyms:
    anode
    the negatively charged terminal of a voltaic cell or storage battery that supplies current
    type of:
    depot, terminal, terminus
    station where transport vehicles load or unload passengers or goods
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