Definition of cathode ray in English:

cathode ray

Syllabification: cath·ode ray

noun

  • A beam of electrons emitted from the cathode of a high-vacuum tube.
    More example sentences
    • Inside this glass tube, evacuated of air, a negatively charged and heated metal plate emitted a beam - a cathode ray - that could be focused and accelerated by its attraction towards a positively charged plate.
    • TV detector vans do not work by picking up radiation from the cathode ray tube
    • This sends information to the cathode ray in the back of your television, which projects it onto the screen.

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