3D stands for three dimensional, and in computing may refer to 3D graphics or 3D displays.
3D graphics are, paradoxically, usually displayed on a 2D computer screen. The name comes from the fact that they model three-dimensional objects, such as in CAD or 3D action games.
True 3D displays have only recently started to become widely available, possibly influenced by 3D movies such as Avatar.
Some issues remain though, such as need to wear glasses to experience the technology, although there are now many version of 3D technology being developed that don't require glasses in an attempt to remove this obstacle.
Many mobile phone manufacturers are starting to incorporate it in to their handsets too, such as LG, while gaming laptops and televisions are also now available.
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