| Word | Description |
| 3D Style Sheet (3SS) | The collection of Prototypes that define the way that a 2D webpage is displayed as a 3D webspace. |
| Scene Graph | A structure that arranges the logical and spatial representation of a graphical scene. Webpages are built according to a scene graph. ExitReality converts the webpage scene graph into a 3D scene graph, which is then used as the basis for building a 3D websapce. |
| Prototype | A definition of a new node type in terms of standard nodes. A prototype needs to have an instance created from it (i.e., be instantiated, usually with data from another source) before it can be viewed in a 3D scene. |
| Transmogrification | The process of converting 2D data, such as a html page, to a 3D virtual environment. |
| Webspace | A 3D environment that is build using information that resides at a URL on the world wide web. |