cathode ray
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noun
a flow of electrons emanating from a cathode in a vacuum tube and focused into a narrow beam.
Nearby words
cathleen, catho, cathode, cathode dark space, cathode glow, cathode ray, cathode rays, cathode-ray tube, cathodic, cathodic protection, cathodoluminescence
Origin of cathode ray
First recorded in 1875–80
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for cathode ray
A cathode-ray photograph of the whale, showing myself, the original Jonah, seated inside.
The Enchanted Typewriter|John Kendrick Bangs
Medicine definitions for cathode ray
cathode ray
[ kăth′ōd′ ]
n.
A stream of electrons emitted by the cathode in electrical discharge tubes.
One of the electrons that is emitted in a stream from a cathode-ray tube.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for cathode ray
cathode ray
A beam of electrons streaming from the negatively charged end of a vacuum tube (the cathode) toward a positively charged plate (the anode).
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.