| Subject | English | Portuguese |
| IT, nat.sc. | Cooperation for Open Systems Interconnection Networking in Europe | Cooperação para a Realização de Redes de Sistemas Abertos de Interconexão na Europa |
| gen. | cooperation for open systems interconnection networking in Europe | Cooperação para a Realização de Redes de Sistemas Abertos de Interconexão na Europa |
| commun., IT | open systems interconnection architecture | arquitetura de interligação de sistemas abertos |
| commun., IT | open systems interconnection environment | ambiente para interconexão de sistemas abertos |
| commun., IT | open systems interconnection management | gestão OSI |
| commun., IT | open systems interconnection management | gestão da interconexão de serviços abertos |
| comp., MS, Braz. | Open Systems Interconnection model | modelo de referência OSI (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) |
| 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 | modelo de referência de interligação de sistemas abertos |