| Building Information Model: | a three dimensional model that describes the building, its entities, their characteristics and behaviour. |
| Entities: | The elements that are used to describe a building |
| IFC: | Industry Foundation Classes |
| IFC standard file format: | An internationally sanctioned format for describing building data that enables interoperability between different applications. The format is widely supported by construction industry applications, including Autodesk's Architectural Desktop, Bentley Systems' Microstation Triforma, Graphisoft's ArchiCAD. |
| Interoperability: | |
| ISO/PAS 16739: | The ISO standard of interoperability of data within the construction industry that defines the objects and attributes required to describe a building. |