Resolution

From Styleguide

resolution

The number of pixels contained in an image or screen. Note that the resolution of which a system or computer is capable, the resolution of which a screen is capable and the resolution for which a game is programmed may all be different.

When describing computer games and monitors, list resolution as horizontal pixels and vertical pixels separated by an "x." The game requires a monitor capable of 1024x768 resolution.(Pronounced "ten-twenty-four by seven-six-eight.")

When describing TV-based systems and games, express resolution as the number of vertical scan lines (usually 480, 720 or 1080), followed by the letter p (for progressive scan, which refreshes all scan lines every cycle) or i (for interlaced, which refreshes only half the scan lines each cycle).

A resolution of 480i or below is referred to as standard definition. 720 and higher TV resolution is referred to as high-definition.

Example: The number of American homes that have TVs capable of a 1080p picture is growing every day.

Also see: frame rate, HDTV.