: an electron tube evacuated to a high degree of vacuum
Examples of vacuum tube in a Sentence
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The intent of their research effort was to develop a technology to replace vacuum tubes that powered communications networks.—Scott D. Anthony, Fortune, 29 Nov. 2025 The idea isn't new, but Epirus has improved on previous iterations by using Gallium Nitride (GaN) semiconductors to generate microwaves instead of fragile, power-hungry magnetron vacuum tubes.—New Atlas, 27 Sep. 2025 This package includes the motor, blower and vacuum tubes, concentrator nozzle and a leaf collection bag.—Bestreviews, Mercury News, 26 Sep. 2025 Photos: Jayme Thornton Indeed, an ionization gauge has the same basic components as a vacuum tube.—IEEE Spectrum, 24 Sep. 2025 See All Example Sentences for vacuum tube
: an electron tube from which most of the air has been removed
Medical Definition
vacuum tube
noun
: an electronic device in which conduction by electrons takes place through a vacuum within a sealed glass or metal container and which has various uses based on the controlled flow of electrons
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