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A microwave tube in which electrons generated from a heated cathode are affected by magnetic and electric fields in such a way as to produce microwave radiation used in radar and in microwave ovens.
(Electronics) an electronic valve with two coaxial electrodes used with an applied magnetic field to generate high-power microwave oscillations, esp for use in radar
[C20: from magnet + electron]
a two-element vacuum tube used to generate microwaves.
An electron tube that produces microwave radiation by applying magnetic and electric fields to a stream of electrons emitted by a heated filament. Magnetrons are used in radar and in microwave ovens.
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|Noun||1.||magnetron - 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|