cathode ray tube


General Science

  • noun a device used for displaying characters, figures or graphical information, similar to a TV set.
  • noun a sealed glass tube with one flat end coated on the inside with a luminescent compound and an electron gun at the other end


  • noun a high-vacuum tube in which cathode rays produce an image on a screen such as a TV screen

Information & Library Science

Media Studies

  • noun a display device for television and computer screens which uses electron beams fired at the screen’s phosphorescent coating to display video pictures