| Subject | German | English |
| hobby, transp. | Billet open | open-date ticket |
| hobby, transp. | Billet open | billet open |
| hobby, transp. | Billet open | open ticket |
| hobby, transp. | Billet open-jaw | open-jaw ticket |
| tech. | Buna-OP | oil-plasticized butadiene rubber |
| comp. | Ein Open source Betriebssystem basierend auf Unix | Linux |
| commun. | Government-Open-Systems-Interconnect-Profile | Government Open Systems Interconnect Profile |
| ed. | Lernplattform auf Open Source-Basis | Modular Object-Oriented Dynamic Learning Environment |
| ed. | Lernplattform auf Open Source-Basis | Moodle |
| IT | N-Op-Befehl | no-operation order |
| IT | N-Op-Befehl | waste command |
| IT | N-Op-Befehl | waste order |
| IT | N-Op-Befehl | waste instruction |
| IT | N-Op-Befehl | idle command |
| IT | N-Op-Befehl | idle order |
| IT | N-Op-Befehl | idle instruction |
| IT | N-Op-Befehl | no-operation command |
| IT | N-Op-Befehl | no-op command |
| IT | N-Op-Befehl | no-op order |
| IT | N-Op-Befehl | no-operation instruction |
| IT | N-Op-Befehl | no-op instruction |
| comp., MS | Office Open XML-Formate | Office Open XML formats (An international open standard for word-processing documents, presentations, and spreadsheets that can be freely implemented across multiple applications and platforms) |
| IT, tech. | OP-Code | command code |
| chem. | OP-Handschuhe | medical gloves |
| comp. | Op-Kode | operation code |
| comp. | Op-Kode | operating code |
| comp. | Op-Kode | opcode |
| med. | OP-Saal | surgery |
| med. | OP-Saal | theatre |
| med. | OP-Saal | operating theatre |
| med. | OP-Saal | operating room |
| med.appl. | OP-Tisch | operating table |
| gen. | Open-Air-Sex | open air sex (Andrey Truhachev) |
| gen. | Open-Air-Sex | outdoor sex (Andrey Truhachev) |
| gen. | Open Bar | sponsored bar |
| gen. | Open Bar | open bar |
| gen. | Open Bar | host bar |
| auto. | Open Center System | Open Center System (Hydraulik) |
| microel. | Open-Collector-Gatter | open-collector gate |
| IT | Open Data | open data |
| comp., MS | Open Data Services-Bibliothek | Open Data Services library (A set of C functions that makes an application a server. ODS library calls respond to requests from a client in a client/server network. Also manages the communication and data between the client and the server. ODS library follows the tabular data stream (TDS) protocol) |
| engl. | Open Diagnostic Data Exchange | Open Diagnostic Data Exchange |
| comp. | Open-Drain-Ausgang | open-drain output |
| comp. | Open-Drain-Treiber | open-drain driver |
| ed., IT | Open Educational Resources | open educational resources |
| textile | Open-End- Spinnmaschine | open end spinning machine |
| textile | Open End-Faden | open-end spun yarn |
| textile | Open- End-Garn | open end yarn |
| textile | Open-End-Spinnen | break spinning |
| textile | Open-End-Spinnen | open end spinning |
| coal., el. | "open-hole"-Komplettierung | open-hole completion |
| AI. | OPEN-Knoten | OPEN node |
| comp. | Open-Kollektor-Ausgang | open-collector output |
| comp. | Open-Kollektor-Gate | open-collector gate |
| tech. | Open-loop | open-loop |
| fin. | open-market-Interventionen | open market transaction |
| fin. | open-market-Interventionen | open market operation |
| fin. | Open Repo | open repo |
| IT | Open-shop-Betrieb | open shop 2 |
| IT | Open-shop-Betrieb | open shop 1 |
| tech. | Open-Shop-Betrieb | open shop |
| comp., MS | Open Shortest Path First | open shortest path first (A routing protocol for Internet Protocol (IP) networks. OSPF allows a router to calculate the shortest path to each node for sending messages. The router sends information on the nodes it is linked to, called link-state advertisements, to other routers on the network to accumulate link-state information to make its calculations) |
| commun. | Open-Shortest-Path-First | open shortest path first |
| transp., avia. | Open Sky | open sky |
| transp. | "Open-sky"-Abkommen | Open Sky agreement |
| transp., avia. | Open-Sky-Konzept | the "open sky" concept |
| comp., MS | Open Software Descriptor-Datei | Open Software Descriptor file (An XML-based file that instructs the client on how to retrieve the sequenced application from the Application Virtualization Management/Streaming Server and how to run the sequenced application in its virtual environment) |
| progr. | Open Source Bibliothek | open source library (ssn) |
| progr. | Open Source Bibliothek nach dem IEC61131-3 Standard | open source library referenced to the IEC61131-3 standard (ssn) |
| gen. | Open Source Software | open source software OSS |
| gen. | Open Source Software, freie Software | open source software OSS |
| chem. | open-split | open split |
| abbr. | open systems interconnection | OSI |
| transp. | open-top Container | open top container |
| transp. | open-top Container | container with opening top |
| transp. | Open-Top-Container | open top container |
| transp. | Open-Top-Container | container with opening top |
| tech. | open-tube-Kuehlung | open-tube cooling |
| gen. | Open Tuning | open tuning |
| comp., MS | Open XML-Formate | Open XML formats (An international open standard for word-processing documents, presentations, and spreadsheets that can be freely implemented across multiple applications and platforms) |
| microel. | s. open | open circuit |
| comp. | Stuck-Open-Fehler | stuck-open fault |
| polit. | Veranstaltungen, Foren, Open Days | Unit D2 |
| polit. | Veranstaltungen, Foren, Open Days | Events, Fora, Open Days |
| gen. | Vertrag über "Open Skies"offener Himmel | Treaty on Open Skies |
| gen. | Vertrag über "Open Skies"offener Himmel | "Open Skies" Treaty |
| comp., MS | Web App Open Platform Interface | Web app Open Platform Interface (An interface that enables a web application server (for example, Office Web Apps Server) to access and change files that are stored by a host server (such as SharePoint Server)) |
| IT | X-Open | x-open |
| IT | X-Open-Gruppe | x-open |