(electron) tube

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Definition of (electron) tube in English English dictionary

electron tube
Any of several devices consisting of a sealed chamber, either evacuated or filled with gas at low pressure, in which an electric current flows between electrodes
electron tube
A sealed enclosure, either highly evacuated or containing a controlled quantity of gas, in which electrons can be made sufficiently mobile to act as the principal carriers of current between at least one pair of electrodes
electron tube
tube: electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
(electron) tube
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