Word of the Day
16 July 2026
raster
A scanning pattern of parallel lines that form the display of an image projected on a cathode-ray tube of a television set or display screen.
Why this one
From the Latin for rake, via German: the beam combs the screen in parallel furrows. On a CRT bench the raster is what you check first, because a picture fault and a scan fault look nothing alike.
In use
Got a raster on the tube but no picture, so leave the sweep circuits alone and start looking at the video stage.
Written by our editors to show how the term is used, not a recorded quotation.Sources
- Definition sourceWiktionary