reflectron

== English == === Etymology === From reflect + -tron. === Pronunciation === (Received Pronunciation) IPA(key): /ɹɪˈflɛkˌtɹɒn/ (General American) IPA(key): /ɹɪˈflɛkˌtɹɑn/ === Noun === reflectron (plural reflectrons) (physics, chemistry) A time-of-flight mass spectrometer that uses a static electric field to reverse the direction of travel of the ions entering it.