<hardware> The area of a video display that is covered by
sweeping the electron beam of the display in a series of
horizontal lines from top to bottom. The beam then returns to
the top during the vertical flyback interval.
See also CRT, frame buffer.
(1995-03-22)
raster
['rast?]
¦ noun a rectangular pattern of parallel scanning lines followed by the electron beam on a television screen or computer monitor.
Origin
1930s: from Ger. Raster, lit. 'screen', from L. rastrum 'rake'.
Raster graphics
DOT MATRIX DATA STRUCTURE, REPRESENTING A GENERALLY RECTANGULAR GRID OF PIXELS, OR POINTS OF COLOR, VIEWABLE VIA A MONITOR, PAPER, OR OTHER DISPLAY MEDIUM