magnetron
noun
mag·ne·tron
ˈmag-nə-ˌträn 
: a vacuum tube in which the flow of electrons is controlled by an applied magnetic field to generate power at microwave frequencies
Examples of magnetron in a Sentence
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Electricity Produces Electromagnetic Waves A magnetron in the microwave oven uses electricity to produce electromagnetic waves.
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Brittany Lubeck, Verywell Health, 20 Oct. 2025
The idea isn't new, but Epirus has improved on previous iterations by using Gallium Nitride (GaN) semiconductors to generate microwaves instead of fragile, power-hungry magnetron vacuum tubes.
—New Atlas, 27 Sep. 2025
Klystrons and their cousins, cavity magnetrons (found in ordinary microwave ovens), are quite efficient because of their simplicity.
—IEEE Spectrum, 24 June 2024
Understandably curious about just what the heck had happened, Spencer ran another test with the magnetron.
—Matt Blitz, Popular Mechanics, 24 Mar. 2023
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Brittany Lubeck, Verywell Health, 20 Oct. 2025
The idea isn't new, but Epirus has improved on previous iterations by using Gallium Nitride (GaN) semiconductors to generate microwaves instead of fragile, power-hungry magnetron vacuum tubes.
—New Atlas, 27 Sep. 2025
Klystrons and their cousins, cavity magnetrons (found in ordinary microwave ovens), are quite efficient because of their simplicity.
—IEEE Spectrum, 24 June 2024
Understandably curious about just what the heck had happened, Spencer ran another test with the magnetron.
—Matt Blitz, Popular Mechanics, 24 Mar. 2023
See All Example Sentences for magnetron
Cite this Entry
“Magnetron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnetron. Accessed 3 Nov. 2025.
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magnetron
noun
mag·ne·tron
ˈmag-nə-ˌträn
: a diode vacuum tube in which the flow of electrons is controlled by an externally applied magnetic field to generate power at microwave frequencies
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