Magnetron

//ˈmæɡ.nətˌtɹɒn// noun

Definitions

Noun
  1. 1
    A device in which electrons are made to resonate in a specially shaped chamber and thus produce microwave radiation; used in radar, and in microwave ovens
  2. 2
    a diode vacuum tube in which the flow of electrons from a central cathode to a cylindrical anode is controlled by crossed magnetic and electric fields; used mainly in microwave oscillators wordnet

Etymology

From magnet + -tron.

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