magnetron

[ mag-ni-tron ]

/ ˈmæg nɪˌtrɒn /

noun Electronics.

a two-element vacuum tube in which the flow of electrons is under the influence of an external magnetic field, used to generate extremely short radio waves.

Origin of magnetron

First recorded in 1920–25; magne(to)- + -tron

Words nearby magnetron

magnetostatics, magnetostriction, magnetotail, magnetotaxis, magnetothermoelectricity, magnetron, magnet school, magnet steel, magnet therapy, magni-, magnific

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for magnetron

magnetron

/ (ˈmæɡnɪˌtrɒn) /

noun

an electronic valve with two coaxial electrodes used with an applied magnetic field to generate high-power microwave oscillations, esp for use in radar

Word Origin for magnetron

C20: from magnet + electron

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for magnetron

magnetron

[ măg′nĭ-trŏn′ ]

An electron tube that produces coherent microwave radiation. Magnetrons are diodes in which the electrons traveling to the anode are set in spiraling paths by a magnetic field created by permanent magnets. The circular component of the electrons' motion causes microwave-frequency oscillations in the voltage induced in resonating cavities built into the anode, which is connected to an antenna that emits the microwaves. Magnetrons are used in radar and in microwave ovens.

单词	magnetron
释义	magnetron [ mag-ni-tron ] / ˈmæg nɪˌtrɒn / noun Electronics. a two-element vacuum tube in which the flow of electrons is under the influence of an external magnetic field, used to generate extremely short radio waves. Origin of magnetron First recorded in 1920–25; magne(to)- + -tron Words nearby magnetron magnetostatics, magnetostriction, magnetotail, magnetotaxis, magnetothermoelectricity, magnetron, magnet school, magnet steel, magnet therapy, magni-, magnific Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for magnetron magnetron / (ˈmæɡnɪˌtrɒn) / noun an electronic valve with two coaxial electrodes used with an applied magnetic field to generate high-power microwave oscillations, esp for use in radar Word Origin for magnetron C20: from magnet + electron Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for magnetron magnetron [ măg′nĭ-trŏn′ ] An electron tube that produces coherent microwave radiation. Magnetrons are diodes in which the electrons traveling to the anode are set in spiraling paths by a magnetic field created by permanent magnets. The circular component of the electrons' motion causes microwave-frequency oscillations in the voltage induced in resonating cavities built into the anode, which is connected to an antenna that emits the microwaves. Magnetrons are used in radar and in microwave ovens. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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