| Subject | English | Spanish |
| IT | business operating system | sistema operativo concebido para los ordenadores de gestión |
| patents. | cartridges and software for hand-held game systems, coin-operated arcade games | cartuchos y software para sistemas de juegos portátiles, juegos recreativos de previo pago |
| commun. | cellular operating system | sistema operativo celular |
| commun., IT | client-server operating system | sistema operativo cliente/servidor |
| commun. | compatible operating of systems | interoperabilidad de los sistemas |
| commun. | compatible operating of systems | funcionamiento compatible de los sistemas |
| earth.sc. | deep ocean operating system | sistema operativo de tecnología marina a profundidades oceánicas |
| IT, dat.proc. | disc operating system | sistema operativo de disco |
| IT | Disk Operating System | sistema operativo en disco |
| IT | Disk Operating System | Sistema operativo de discos |
| IT, el. | disk operating system | sistema operativo de disco |
| IT | disk-operating system | sistema operativo en disco |
| inet. | Disk Operating System | Sistema Operativo en Disco |
| IT | exchange kernel operating system | sistema operativo interno de intercambio |
| IT | extended operating system | systema operativo extendido |
| IT | floppy disk operating system | sistema operativo disquete |
| tech., law | General requirements for bodies operating product certification systems | Criterios generales relativos a los organismos de certificación de productos |
| transp. | government operated system | transporte público explotado por la administración |
| comp., MS | guest operating system | sistema operativo invitado (The operating system running on a virtual machine) |
| comp., MS | host operating system | sistema operativo 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 | cargar desde un sistema operativo |
| IT | management operating system | sistema integrado de gestión |
| IT | Microsoft disk operating system | sistema operativo en disco de Microsoft |
| comp., MS | Microsoft Windows operating system | sistema operativo Microsoft Windows (A proprietary software operating system with a graphical user interface (GUI)) |
| IT, transp. | operating control system | sistema de control de tráfico |
| IT | operating mode system | sistema interno de explotación |
| commun. | operating support system | sistema de sustentación operacional |
| inet. | Operating System | Sistema Operativo |
| IT | Operating System | Sistema operativo |
| econ. | operating system | sistema operativo |
| IT | operating system certification | certificación del sistema operativo |
| IT | operating system components | componentes del sistema operativo |
| IT | operating system performance | prestaciones del sistema operativo |
| IT | operating system security flaw | defecto de seguridad en el sistema operativo |
| IT | operating system version | versión de un sistema operativo |
| IT | operating system/virtual storage | sistema operativo con memoria virtual |
| IT, dat.proc. | Operating System/Virtual Storage | OS/VS |
| IT | operating system vulnerability | vulnerabilidad del sistema operativo |
| IT, dat.proc. | operating-system prompt | indicador de comandos del sistema operativo |
| commun., IT, industr. | Portable Operating System Interface for computer environment | Sistema operativo transportable de la ISO |
| commun., IT, industr. | Portable Operating System Interface Standard | Sistema operativo transportable de la ISO |
| commun., IT, industr. | Portable Operating System Interface X | Sistema operativo transportable de la ISO |
| transp. | power system for power-operated door | sistema de energía para la puerta de accionamiento a motor |
| transp. | power-operated roof panel system | techo móvil de accionamiento eléctrico |
| agric. | producer county operating a protectionist system | país productor con régimen protegido |
| IT | secure operating system | sistema operativo seguro |
| IT | supervisory operating system | sistema operativo supervisor |
| gen. | tele-operated ordnance disposal system | sistema telecomandado de destrucción de municiones |
| IT | Virtual Environment Operating System | Sistema operativo de entorno virtual |
| comp., MS | Windows operating system | sistema operativo Windows (A proprietary software operating system with a graphical user interface (GUI)) |