Raster/ˈɹæstɚ/nounA 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.A bitmap image, consisting of a grid of pixels, stored as a sequence of lines.Synonyms: bitmap, pixmapverbTo scan in parallel lines.🔗 Explore synonyms & relationships🌍 See word origin & history