... >> Technology >> Imaging Technology >> Pixel
Definition: one of the individual dots that make up a graphical image. For example, an xGA color screen in high-resolution mode consists of a 1024 × 768 pixel array. A program can draw pictures on the screen by controlling the color of each pixel.
Source: Downing, Douglas, et al. Dictionary of Computer and Internet Terms. 10th ed. New York, 2009. Print.