chrome image on a raster display. If a color or gray-level image is required,
needing many bits to define each pixel in the display, a pixmap is required. [Computer and Information Sciences] 
n., In computer graphics, an area in memory that represents the video image. For monochrome screens, one bit in the bitmap
represents one pixel on screen. [Computer and Information Sciences] 
n., A raster image formed by an array of bits, each bit representing the corresponding pixel's value (light or dark). [Computer 