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cathode-ray tube
noun
: 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
In the late 1950s, CBS was competing with RCA for a big contract from Motorola to produce tubes, including cathode-ray tubes, for color televisions.
—IEEE Spectrum, 23 Oct. 2024
The original peripherals worked on cathode-ray tube televisions, but here they have been updated.
—Asuka Kawanabe, WIRED, 21 Aug. 2024
Chunky cathode-ray tube televisions sat on outdated furniture.
—Christopher Muther, BostonGlobe.com, 24 Aug. 2023
But the original games would have had cathode-ray tube (CRT) screens, which—as anybody using a camera back then would remember—can be difficult to capture.
—Kevin Purdy, Ars Technica, 3 Mar. 2023
However, those retro game screens were made from cathode-ray tube (CRT), which meant when the cameras were rolling, the images were not clear.
—Jazz Tangcay, Variety, 27 Feb. 2023
For example batteries need to be removed from cellphones and older, cathode-ray tube television sets require special handling due to their lead content.
—Carina Woudenberg, Discover Magazine, 13 May 2021
Douglas created a game of tic-tac-toe, which was also displayed on a cathode-ray tube, for the University of Cambridge EDSAC computer.
—Noah Wardrip-Fruin, The Conversation, 29 Nov. 2021
Seven years later, Boris Rosing first transmitted silhouetted images of geometric shapes, using a cathode-ray tube receiver.
—Kevin Dayhoff, baltimoresun.com/maryland/carroll, 9 Oct. 2020
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Word History
First Known Use
1905, in the meaning defined above
Dictionary Entries Near cathode-ray tube
Cite this Entry
“Cathode-ray tube.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cathode-ray%20tube. Accessed 19 Dec. 2024.
Kids Definition
cathode-ray tube
noun
: a vacuum tube in which a beam of electrons is projected upon a fluorescent screen and produces a glowing spot
Medical Definition
cathode-ray tube
noun
: 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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