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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.
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Origin of cathode ray
First recorded in 1875–80
Words nearby cathode ray
Cathleen, Catho, cathode, cathode dark space, cathode glow, cathode ray, cathode rays, cathode-ray tube, cathodic, cathodic protection, cathodoluminescence
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use cathode ray in a sentence
Scientific 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
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