gyrotron

== English == === Etymology === From gyro- +‎ -tron. === Pronunciation === (Received Pronunciation) IPA(key): /ˈd͡ʒaɪ.ɹəˌtɹɒn/ (General American) IPA(key): /ˈd͡ʒaɪ.ɹəˌtɹɑn/ === Noun === gyrotron (plural gyrotrons) (physics) A type of microwave generator employing cyclotron resonance coupling between microwave fields and a beam of electrons.