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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

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Recent Examples of cathode-ray tube from the Web

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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CATHODE-RAY TUBE Defined for English Language Learners

cathode-ray tube

noun

Definition of cathode-ray tube for English Language Learners

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

Medical Dictionary

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

Learn More about cathode-ray tube

  1. Britannica.com: Encyclopedia article about cathode-ray tube

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