cathode-ray tube

noun

Definition of cathode-ray tube 

: a vacuum tube in which a beam of electrons is projected on a phosphor-coated screen to produce a luminous spot at a point on the screen determined by the effect on the electron beam of a variable magnetic field within the tube

Examples of cathode-ray tube in a Sentence

Recent Examples on the Web

There is mercury in liquid-crystal display screens, lead in cathode-ray tubes, cadmium in semiconductors and batteries, and ozone layer-destroying chlorofluorocarbons in old refrigerators, for example. Peter Ford, The Christian Science Monitor, "'E-waste': Getting grip on a growing global problem," 9 July 2018 The console also offers three display choices: the original 4:3 aspect ratio of the games, a CRT filter that replicates the same blurry look of cathode-ray tube TVs, and a Pixel Perfect mode that makes the games look crisp and clean. Gregory Schmidt, New York Times, "Nintendo’s Super NES Classic Edition Is Nostalgia, Revisited," 27 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cathode-ray tube.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of cathode-ray tube

1905, in the meaning defined above

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Time Traveler for cathode-ray tube

The first known use of cathode-ray tube was in 1905

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More Definitions for cathode-ray tube

cathode-ray tube

noun

English Language Learners Definition of cathode-ray tube

: a large tube that shows a picture on a screen (such as a television or computer screen)

cathode-ray tube

noun

Medical Definition of cathode-ray tube 

: a vacuum tube in which a beam of electrons is projected on a fluorescent screen to produce a luminous spot

More from Merriam-Webster on cathode-ray tube

Britannica.com: Encyclopedia article about cathode-ray tube

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