Definition of magnetron
: a vacuum tube in which the flow of electrons is controlled by an applied magnetic field to generate power at microwave frequencies
Recent Examples of magnetron from the Web
Blame it on the magnetron, the cooking element of every microwave oven.
The air from the magnetron cooling will then be re-directed to the exterior.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'magnetron.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of magnetron
blend of magnet and -tron
First Known Use: 1921See Words from the same year
Learn More about magnetron
Britannica.com: Encyclopedia article about magnetron
Seen and Heard
What made you want to look up magnetron? Please tell us where you read or heard it (including the quote, if possible).