thermionic valve

Questions about thermionic valve

What does thermionic valve mean?

thermionic valve means "electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope".

What is another word for thermionic valve?

Close synonyms include tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is thermionic valve a common word?

thermionic valve 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.