vacuum tube
noun
Simple Definition of vacuum tube
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: a glass tube that was used in the past in computers, televisions, etc., to control the flow of electricity
Source: Merriam-Webster's Learner's Dictionary
Full Definition of vacuum tube
: an electron tube evacuated to a high degree of vacuum
1859
First Known Use of vacuum tube
1859
Medical Dictionary
vacuum tube
noun
Medical Definition of vacuum tube
: 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
Learn More about vacuum tube
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Britannica.com: Encyclopedia article about vacuum tube
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