Definition of magnetron in English:


Syllabification: mag·ne·tron
Pronunciation: /ˈmagnəˌträn


  • An electron tube for amplifying or generating microwaves, with the flow of electrons controlled by an external magnetic field.
    More example sentences
    • You remember there had been developed in my laboratory by Randall and Boot, a cavity magnetron which made microwave radar possible and I went to America in connection with the early days of this.
    • Randall had set up the unit on the basis of his wartime reputation, having developed (with Henry Boot) the cavity magnetron, the heart of airborne radar and a crucial element in the Allies' narrow victory in the battle of the Atlantic.
    • Today, magnetrons are used as the source of heat in microwave ovens.


early 20th century: from magnetic + -tron from electron.

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Word of the day milord
Pronunciation: mɪˈlɔːd
used to address an English nobleman