| Subject | English | Portuguese |
| transp. | Advisory Committee on the definition and use of compatible technical and operating specifications for the procurement of air traffic management equipment and systems | Comité consultivo da definição e da utilização de normas e de especificações técnicas compatíveis para a aquisição de equipamentos e de sistemas para e gestão do tráfego aéreo |
| commun. | cellular operating system | sistema de operação celular |
| commun., IT | client-server operating system | sistema operativo cliente-servidor |
| commun. | compatible operating of systems | interoperacionalidade dos sistemas |
| patents. | computer operating system software | software de sistemas operativos para computadores |
| patents. | computer operating systems | sistemas operativos para computadores |
| mech.eng. | core operating limit supervisory system | sistema de supervisão dos limites de funcionamento do núcleo |
| tech. | core operating limit supervisory system | sistema de vigilância dos limites operativos do núcleo |
| tech. | core operating limit supervisory system | sistema de supervisão dos limites operativos do núcleo |
| earth.sc. | deep ocean operating system | sistema de operação em águas oceânicas profundas |
| IT, dat.proc. | disc operating system | sistema operativo do disco |
| IT | disk-operating system | Sistema Operativo de Disco |
| IT | disk operating system | sistema operativo em disco |
| IT, el. | disk operating system | sistema de operação sobre disco |
| IT, el. | Disk Operating System | sistema de operação sobre disco |
| mech.eng. | door operating system | comando de porta |
| tech., law | General requirements for bodies operating product certification systems | Requisitos gerais para organismos de certificação de produtos |
| IT | GUARDIAN 90 operating system | sistema operativo GUARDIAN 90 |
| comp., MS, Braz. | guest operating system | sistema operacional convidado (The operating system running on a virtual machine) |
| comp., MS | guest operating system | sistema operativo convidado (The operating system running on a virtual machine) |
| comp., MS, Braz. | guest operating system profile | perfil de sistema operacional convidado (A library resource containing the most common settings from a Sysprep.inf file, including the computer name and domain or workgroup settings, which can be applied to a virtual machine template) |
| comp., MS, Braz. | host operating system | sistema operacional do host (The operating system of the physical computer running the Virtual Server or Virtual PC software) |
| ed., IT | intelligent operating system | sistema operativo inteligente |
| IT, dat.proc. | to load from an operating system | carregar um documento a partir do sistema operativo |
| IT | management operating system | sistema de informação de gestão |
| IT | Microsoft disk operating system | Sistema Operativo de Disco da Microsoft |
| comp., MS, Braz. | Microsoft Disk Operating System | Sistema operacional MS-DOS (A Microsoft computer operating system with a command-line interface that is used to control many internal computer functions, such as running programs and organizing and maintaining files) |
| comp., MS, Braz. | Microsoft Windows operating system | sistema operacional Microsoft Windows (A proprietary software operating system with a graphical user interface (GUI)) |
| comp. | mobile operating system | sistema operativo móvel |
| comp., MS, Braz. | MS-DOS operating system | sistema operacional MS-DOS (A Microsoft computer operating system with a command-line interface that is used to control many internal computer functions, such as running programs and organizing and maintaining files) |
| comp., MS | MS-DOS operating system | sistema operativo MS-DOS (A Microsoft computer operating system with a command-line interface that is used to control many internal computer functions, such as running programs and organizing and maintaining files) |
| IT | Network Operating System | sistema operativo para rede |
| ed., IT | network operating system | sistema operativo em rede |
| comp., net. | network operating system | sistema de operação de rede |
| IT, transp. | operating control system | sistema de controlo de exploração |
| IT | operating mode system | sistema interno de exploração |
| commun. | operating support system | comutação pública e os sistemas de apoio |
| IT | Operating System | sistema de operação |
| comp., MS, Braz. | operating system | sistema operacional (The software that controls the allocation and usage of hardware resources such as memory, central processing unit (CPU) time, disk space, and peripheral devices. The operating system is the foundation on which programs are built) |
| comp., MS | operating system | sistema operativo (The software that controls the allocation and usage of hardware resources such as memory, central processing unit (CPU) time, disk space, and peripheral devices. The operating system is the foundation on which programs are built) |
| IT | Operating System | sistema de exploração |
| econ. | operating system | sistema operativo |
| IT | operating system certification | certificação do sistema operativo |
| IT | operating system components | componentes do sistema operativo |
| comp., MS, Braz. | operating system deployment | implantação de sistema operacional (A Configuration Manager feature that allows you to create operating system images and deploy those images to target computers) |
| comp., MS | operating system deployment | implementação do sistema operativo (A Configuration Manager feature that allows you to create operating system images and deploy those images to target computers) |
| comp., MS | Operating System Deployment Manager | Gestor de Implementação do Sistema Operativo (A security role that grants permissions to administrative users so that they can create, deploy, and manage operating system images) |
| IT | operating system performance | desempenho do sistema operativo |
| IT | operating system security flaw | defeito na segurança do sistema operativo |
| IT | operating system version | versão de um sistema operativo |
| comp., MS, Braz. | operating system volume | volume do sistema operacional (A volume that contains an operating system (for example, Windows Vista) that can be loaded by Windows Boot Manager. A given system can have multiple operating system volumes. The operating system on the current volume can be started only if it has an entry in the Boot Configuration Data (BCD)) |
| comp., MS | operating system volume | volume de sistema operativo (A volume that contains an operating system (for example, Windows Vista) that can be loaded by Windows Boot Manager. A given system can have multiple operating system volumes. The operating system on the current volume can be started only if it has an entry in the Boot Configuration Data (BCD)) |
| IT | operating system vulnerability | vulnerabilidade do sistema operativo |
| agric. | producer county operating a protectionist system | país produtor em situação de regime de proteção |
| IT | real address and virtual address operating mode system | sistema de exploração de endereços reais ou endereços virtuais |
| IT, el. | real-time operating system | sistema operativo em tempo real |
| IT, el. | real-time operating system | sistema de operação em tempo real |
| IT | secure operating system | sistema operativo seguro |
| IT | supervisory operating system | sistema operativo supervisor |
| comp., MS, Braz. | Windows operating system | sistema operacional Windows (A proprietary software operating system with a graphical user interface (GUI)) |