Pronunciation: /ˈkæθoʊd reɪ/
noun A stream of electrons emitted by the negative electrode in a vacuum tube or cathode-ray tube.
A1 A cathode ray is a type of electron beam.
A2 Old TVs used cathode ray tubes to display images.
B1 Scientists use cathode ray technology in various research experiments.
B2 The cathode ray emits light when it hits the phosphor coating on the screen.
C1 Understanding the behavior of cathode rays led to the development of modern television technology.
C2 The study of cathode rays played a crucial role in the advancement of particle physics.
formal The cathode ray tube is a vacuum tube that uses a cathode ray to produce images on a screen.
informal I learned about cathode rays in my science class, they're pretty cool.
slang I zapped that bug with a cathode ray gun!
figurative His words hit me like a cathode ray, leaving a lasting impact.
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