ELECTRON GUN as NOUN

1. Meaning
   • the electrode that is the source of electrons in a cathode-ray tube or electron microscope
   • consists of a cathode that emits a stream of electrons and the electrostatic or electromagnetic apparatus that focuses it
   Hypernyms(s) electron gun is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • electrode (what does electrode mean?)