See also: OLED, LCD, Resolution, Retina Display
CIMM DEFINITION: A pixel is a single point, or dot, in a digital photograph or on a mobile phone (or other) display. The number of pixels in an image or display that make up the X and Y axes are often referred to as the resolution. (Source: www.Mobileburn.com)
2: A picture element (single illuminated dot) on a computer monitor. The metric used to indicate the size of Internet ads. (Source: IAB)