1. a rectangular pattern of parallel scanning lines followed by the electron beam on a television screen or computer monitor
Usage: technical
2. a grid of pixels or data points used to represent images in computer graphics
Usage: computing

Examples

• The old CRT television displayed images using a raster scan pattern.
• Digital photographs are stored as raster images made up of individual pixels.
• The graphics program can convert vector drawings into raster format.
• Each line of the raster contains hundreds of pixels.
• Raster graphics become pixelated when enlarged too much.
• The monitor’s raster pattern refreshes sixty times per second.