electron gun

1. 1.

   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

   Broaderelectrode

   Part ofcathode-ray tubeelectron microscope

Questions about electron gun

What does electron gun mean?

electron gun means "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".

Is electron gun a common word?

electron gun is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.