A CDE Definition
Typically refers to a TV or computer screen that has a 16:9 aspect ratio, which is wider than the screens commonly used before the turn of the century. See 16:9.
The ratio of width to height of the screen on a high-definition TV set (HDTV) or computer monitor. Also expressed as the ratio 1.78:1, a 16:9 screen provides a wider rectangle than the 4:3 ratio of earlier TV sets and monitors. However, 16:9 is not as wide as the screens in movie theaters (see aspect ratio for comparison). Watching movies that are maintained in their original theater format on a 16:9 monitor still results in letterbox viewing, with black bars at top and bottom. See letterbox and HDTV.
4:3 and 16:9 Aspect Ratios
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