triode

Noun
  1. A thermionic vacuum tube having three electrodes;
    Fluctuations of the charge on the grid control the flow from cathode to anode which makes amplification possible (synset 104491688)
    is a type of: electron tube, thermionic tube, thermionic vacuum tube, thermionic valve, tube, vacuum tube - electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope

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