Definition of picture tube in English:

picture tube

noun

Electronics
  • The cathode ray tube of a television set designed for the reproduction of television pictures.

    • ‘According to a preferred embodiment the parts are spatially separated and mechanically independent, with the part intended for geometry error correction being positioned closer to the screen of the picture tube.’
    • ‘Screensavers are no longer required to protect your monitor from burning the image of whatever is on the screen permanently into the picture tube: instead, they've become an entertaining diversion.’
    • ‘A flat-panel TV has no glass picture tube and, therefore, no lead (though it still contains mercury and other toxic substances).’
    • ‘Manufacturers are responding by designing a much shallower picture tube.’
    • ‘It was not uncommon for an average black and white TV to need a service call at least once a year and replacing the horribly expensive picture tube was a job that kept the apprentices in our workshop pretty busy every day.’