Synonyms for Thermionic tube:

• n.

  •electron tube (noun)
  • electron tube.
  •thermionic tube (noun)
  • thermionic valve,
  • thermionic vacuum tube.
  •vacuum tube (noun)
  • VTS,
  • vt.

• Other synonyms:

  •Other relevant words:
  • tube,
  • valve,
  • radio tube.