| Noun | 1. | pel - (computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored dot); "the greater the number of pixels per inch the greater the resolution"constituent, element, component - an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system; "spare components for cars"; "a component or constituent element of a system" raster - the rectangular formation of parallel scanning lines that guide the electron beam on a television screen or a computer monitor computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures |