Definitions from Wiktionary (thermionic valve)

▸ noun:  (chiefly historical) An electronic device incorporating electrons from a glowing cathode inside an evacuated glass tube, functioning as a switch, amplifier etc.
▸ Also see thermionic_valve


▸ Words similar to thermionic valves
▸ Usage examples for thermionic valves

▸ Idioms related to thermionic valves
▸ Wikipedia articles (New!)
▸ Words that often appear near thermionic valves
▸ Rhymes of thermionic valves

▸ Invented words related to thermionic valves