Vacuum Tube (noun) Definition, Meaning & Examples

noun
  1. an electron tube from which almost all air or gas has been evacuated: formerly used extensively in radio and electronics.
  2. a sealed glass tube with electrodes and a partial vacuum or a highly rarefied gas, used to observe the effects of a discharge of electricity passed through it.
noun
  1. another name for valve (def. 3)
    Vacuum Tube (noun) Definition, Meaning & Examples

    More Definitions