Portuguese
valvula termionica Catalan
vàlvula 
Electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope.
1
A year later, a second tube was opened to serve downtown Manhattan.
2
John's voice, coming clear as day through the tube of seasoned meat.
3
The diaphragm and the speaking tube were the great sources of error.
4
The tube, N, indicates the level of the liquid in the vessel.
5
With the machine running, add 1 cup water through the feed tube.
1
It required the home-made vacuum tube to burn steadily when in use.
2
Under the curving vacuum tube a little further along, we found shelter.
3
Fleming's vacuum tube, however, represented a major breakthrough in the technology.
4
We stood back against the great curving side of the postal vacuum tube.
5
It was the first blood-collecting vacuum tube used on the runner.
1
But she'd be dipped in dogshit before she'd believe that the disc was built by a thermionic valve technology.
1
Television be gan to look up a little in the middle thirties, after the electron tube was substituted for the mill-wheel.
2
I'd rather be a mass of electron tubes than a thing like a centipede-oh yes, I've seen that cartoon in yesterday's Chicago Tribune!