| Subject | English | Turkish |
| comp., MS | guest operating system | konuk işletim sistemi (The operating system running on a virtual machine) |
| comp., MS | Microsoft Disk Operating System | Microsoft Disk İşletim Sistemi (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 | MS-DOS işletim sistemi (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) |
| fin. | non-operating | işletme dışı (Hozyayka_Mednoy_Gory) |
| math. | operating characteristic | isleyen karakteristik |
| math. | operating characteristic | isleyen özellik |
| stat. | operating characteristic | yöneylem araştırması |
| NGO | operating costs | İşletme masrafları |
| austrian | operating costs | İşletme masrafları |
| environ. | operating data Data referring to the practical carrying-out of a process | işletme verileri |
| fin. | operating expense | faaliyet gideri (Hozyayka_Mednoy_Gory) |
| fin. | operating profit | faaliyet kârı (Hozyayka_Mednoy_Gory) |
| comp., MS | operating system | işletim sistemi (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 deployment | işletim sistemi dağıtımı (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 | İşletim Sistemi Dağıtım Yöneticisi (A security role that grants permissions to administrative users so that they can create, deploy, and manage operating system images) |
| comp., MS | operating system volume | işletim sistemi birimi (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 unit | faaliyet birimi (An organization that divides the control of economic resources and operational processes among people who have a duty to maximize the use of scarce resources, to improve processes, and to account for their performance) |
| avia. | Pilot's Operating Handbook | Pilot El Kitabı (Natalya Rovina) |
| NGO | statement of operating costs | Bina Giderleri Hesabı |