Wiktionary
electron tube
n. (context physics English) Any of several devices consisting of a sealed chamber, either evacuated or filled with gas at low pressure, in which an electric current flows between electrodes.
WordNet
electron tube
n. electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope [syn: tube, vacuum tube, thermionic vacuum tube, thermionic tube, thermionic valve]
Wikipedia
Electron tube
Electron tube can be used to describe either of two things:
- Vacuum tube
- Gas-filled tube
Usage examples of "electron tube".
Vacuum tubes work the same way - one electron tube may replace thousands of relays, but every response is either an off or an on.
The cylinder's butt was a multi-contact socket like the female receptacle for a hundred-pin electron tube.