Dictionary
vacuum tube
vacuum tube
noun
: a glass tube that was used in the past in computers, televisions, etc., to control the flow of electricity
Full Definition of VACUUM TUBE
: an electron tube evacuated to a high degree of vacuum
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First Known Use of VACUUM TUBE
1859
vacuum tube
noun (Medical Dictionary)
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
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