Vacuum tube Meaning, Definition & Usage
-
noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
tube; electron tube; thermionic vacuum tube; thermionic valve; thermionic tube.
WordNet
Definitions
(Phys.) , a glass tube provided with platinum electrodes and exhausted, for the passage of the electrical discharge; a Geissler tube.any tube used in electronic devices, containing a vacuum and used to control the flow of electrons in a circuit, as a vacuum diode, triode, or pentode, or a .