- nounelectronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope• Hypernyms: ↑electronic device• Hyponyms:↑acorn tube, ↑diode, ↑rectifying tube, ↑rectifying valve, ↑electron multiplier, ↑gas-discharge tube, ↑klystron, ↑magnetron, ↑pentode, ↑television-camera tube, ↑television pickup tube, ↑tetrode, ↑triode, ↑X-ray tube
* * *Brit.See vacuum tube.[1915-20]
* * *thermionic valve or thermionic tube nounA vacuum tube containing a heated cathode from which electrons are emitted, an anode for collecting some or all of these electrons and, generally, additional electrodes for controlling their flow to the anode• • •Main Entry: ↑thermion
* * *thermionic valve,Especially British. vacuum tube.
Useful english dictionary. 2012.
Look at other dictionaries:
thermionic valve — (US thermionic tube) noun Electronics a vacuum tube giving a flow of thermionic electrons in one direction, used especially in the rectification of a current and in radio reception … English new terms dictionary
thermionic valve — /θɜmiˌɒnɪk ˈvælv/ (say thermee.onik valv) noun a radio valve which contains a heated cathode … Australian English dictionary
thermionic valve — Brit. See vacuum tube. [1915 20] * * * … Universalium
thermionic tube — n. an electron tube having a cathode electrically heated in order to cause electron or ion emission: Also [Brit., etc.] Brit. thermionic valve … English World dictionary
thermionic tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑electron tube, ↑thermionic valve • Hypernyms: ↑electronic device … Useful english dictionary
thermionic vacuum tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic tube, ↑electron tube, ↑thermionic valve • Hypernyms: ↑electronic device … Useful english dictionary
Valve amplifier — A valve amplifier or tube amplifier is a type of electronic amplifier that make use of vacuum tubes instead of solid state semiconductor devices (such as transistors). As any other electronic amplifier they serve to increase the power and/or… … Wikipedia
Valve (disambiguation) — A valve is a device that regulates the flow of fluids.Valve may also refer to: * Valve Corporation, a computer software/games company responsible for the best selling Half Life games * Valve hall, a building which contains the valves of the… … Wikipedia
thermionic — adj. of or relating to electrons emitted from a substance at very high temperature. Phrases and idioms: thermionic emission the emission of electrons from a heated source. thermionic valve (US tube) a device giving a flow of thermionic electrons… … Useful english dictionary
thermionic — adjective concerning the emission of electrons from a heated electrode See Also: thermion, thermionic valve … Wiktionary