magnetron magnetron  /ˈmæɡ nə ˌtrɑn/


  • (n) 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


  1. The magnetron, by whirling electrons at high speed inside a magnetized cylinder, produced extremely short radio waves and great power.
  2. The trick is done by shooting through the food a beam of ultra-high frequency radio energy from a magnetron, the tube which powered many wartime radars.
  3. Chief remaining obstacle is the high cost of the magnetron tubes that must be used in its repeater stations, but he thinks their price can be cut down by large-scale manufacture.


Word of the Day
anachronistic anachronistic
/ə ˌnæ krə ˈnɪ stɪk /