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Definition of Thermionic valve
1. Noun. Electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope.
Exact synonyms: Electron Tube, Thermionic Tube, Thermionic Vacuum Tube, Tube, Vacuum Tube
Specialized synonyms: Acorn Tube, Diode, Rectifying Tube, Rectifying Valve, Electron Multiplier, Gas-discharge Tube, Klystron, Magnetron, Pentode, Television Pickup Tube, Television-camera Tube, Tetrode, Triode, X-ray Tube
Terms within: Anode, Cathode, Electrode, Control Grid, Grid, Plate
Group relationships: Circuit, Electric Circuit, Electrical Circuit
Generic synonyms: Electronic Device
Specialized synonyms: Acorn Tube, Diode, Rectifying Tube, Rectifying Valve, Electron Multiplier, Gas-discharge Tube, Klystron, Magnetron, Pentode, Television Pickup Tube, Television-camera Tube, Tetrode, Triode, X-ray Tube
Terms within: Anode, Cathode, Electrode, Control Grid, Grid, Plate
Group relationships: Circuit, Electric Circuit, Electrical Circuit
Generic synonyms: Electronic Device
Definition of Thermionic valve
1. Noun. (dated or obsolete) An early electronic device incorporating electrons from a glowing cathode inside an evacuated glass tube; functioned as a switch, amplifier etc. ¹
¹ Source: wiktionary.com