plural cathode-ray tubes
: a large tube that shows a picture on a screen (such as a television or computer screen)
—abbr. CRT
Cite this Entry
“Cathode-ray tube.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/cathode-ray%20tube. Accessed 15 Apr. 2026.
Copy Citation
