cathode ray tube
- 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
- noun an output device used in a VDU or phototypesetter for displaying text, figures or graphics.
- noun a display device for television and computer screens which uses electron beams fired at the screen’s phosphorescent coating to display video pictures