| Subject | English | Dutch |
| comp., MS | Open Systems Interconnection model | Open Systems Interconnection (A networking model introduced by the International Organization for Standardization (ISO) to promote multi-vendor interoperability. OSI is a seven-layered conceptual model consisting of the application, presentation, session, transport, network, data-link, and physical layers) |
| commun., comp. | open systems interconnection reference model | OSI-referentiemodel |
| gen. | open systems interconnection reference model | OSI-model |