The Hacker Acronym & Abbreviation Knowledgebase v2.14
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| Acronym |  | Definition | Topics | External Links | |||
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| O | Organization |  |
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| O2 | Object Oriented | ||||||
| OA | Office Automation | ||||||
| OA | Open Access | ||||||
| OA | Order Administration | ||||||
| OAD | Object Activation Daemon | ||||||
| OADM | Optical Add-Drop Multiplexer | ||||||
| OAG | Open Applications Group | ||||||
| OAGEE | Official Airlines Guide Electronic Edition | ||||||
| OAK |  |
OEM Adaptation Kit | |||||
| OAL | OEM Abstraction Layer (aka Hardware Abstraction Layer) | ||||||
| OAL | OEM Adaptation Layer | ||||||
| OAM | Operations, Administration and Maintenance / Operations And Management / Operations And Maintenance | ||||||
| OAM&P | Operation, Administration, Maintenance, and Provisioning | ||||||
| OAO | Over And Out | ||||||
| OAOO | Once And Only Once | ||||||
| OASIS | |
Organization for the Advancement of Structured Information Standards |  |
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| OASYS | Office Automation SYStem | ||||||
| OAW | |
[Microsoft] Office Activation Wizard | |||||
| OAXAL | |
Open Architecture for XML Authoring and Localization | |
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| OBE | Overtaken By Events | ||||||
| OBI | |
Open Buying on the Internet (protocol) | |||||
| OBR | On Board Rotary (detection) | ||||||
| OBTW | Oh, By The Way | ||||||
| OC | Operator Centralization |  |
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| OC | Optical Carrier |  |
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| OCA | Online Crash Analysis | |
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| OCC | Other Common Carrier | ||||||
| OCCS | |
Object Concurrency Control Service | |||||
| OCD | Out of Cell Delineation | ||||||
| OCE | Other Common carrier channel Equipment | ||||||
| OCF | |
Object Components Framework | |||||
| OCI | |
Oracle Call Interface | |||||
| OCIL | |
Open Checklist Interactive Language |
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| OCILLA | |
Online Copyright Infringement Liability Limitation Act | |
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| OCIS | |
Organized Crime Information Systems | |||||
| OCL | Object Constraint Language | ||||||
| OCLC | |
Online Computer Library Center | |
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| OCO | Non-Partitioned Index | ||||||
| OCP | |
Oracle Certified Professional |
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| OCPS | Open Content Publisher Standard | ||||||
| OCR | Optical Character Reader |
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| OCR | Optical Character Recognition |
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| OCS | On Chip Sequencer | ||||||
| OCSP | Online Certificate Status Protocol | ||||||
| OCT | |
Object Code Translator | |||||
| OCU | Office Channel Unit | ||||||
| OCUR | Open Cable Unidirectional Receivers | ||||||
| OCX | |
OLE Control eXtension | |
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| ODA | Office Document Architecture | |
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| ODAC | |
Open Document Architecture Consortium | |||||
| ODAC | Operations Distribution Administration Center | ||||||
| ODAC | |
Oracle Data Access Components | |
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| ODBC | Open DataBase Connectivity | ||||||
| ODCA | |
Open Data Center Alliance | |
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| ODD | Operator Distance Dialing | ||||||
| ODDD | Operator Direct Distance Dialing | ||||||
| ODF | OpenDocument Format | ||||||
| ODI | |
Open Data-link Interface |
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| ODLIS | |
Online Dictionary for Library and Information Science |
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| ODM | Object Data Manager | ||||||
| ODMA | Open Document Management API | ||||||
| ODMG | |
Object Data Management Group (previously Object Database Management Group) |
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| ODP | |
Open Directory Project |
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| ODRAM | Optical Dynamic Random Access Memory | ||||||
| ODRL | |
Open Digital Rights Language |
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| ODS | Open Data Services | ||||||
| ODS | Operational Data Store | ||||||
| ODS | |
Optical Data Systems | |||||
| ODS | Overhead Data Stream | ||||||
| ODT | Operator Display Terminal | ||||||
| OEB | |
Open eBook |
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| OEBF | |
Open eBook Forum (usually as OeBF, currently named International Digital Publishing Forum, or IDPF) |
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| OEBPS | |
Open eBook Publication Structure |
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| OECD | |
Organization for Economic Cooperation and Development | |||||
| OED | |
Oxford English Dictionary | |
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| OEM | Original Equipment Manufacturer | ||||||
| OEMF | |
Open Element Management Framework | |||||
| OF | Overflow | ||||||
| OFB | |
(K-bit) Output Feedback | |||||
| OFC | Open Financial Connectivity (specification) | ||||||
| OFDM | Orthogonal Frequency Division Multiplexing | ||||||
| OFE | |
Open Forum Europe | |
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| OFLC | |
Office of Film and Literature Classification | |
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| OFNPS | Outstate Facility Network Planning System | ||||||
| OFP | Open FORTRAN Parser | |
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| OFX | Open Financial Exchange | ||||||
| OG | Open Graph (protocol) | |
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| OGDL | Ordered Graph Data Language | |
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| OGP | Open Graph Protocol | |
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| OGT | OutGoing Trunk | ||||||
| OGVT | OutGoing Verification Trunk | ||||||
| OH | (modem) Off Hook | ||||||
| OHCI | Open Host Controller Interface | |
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| OHP | OverHead Projection (film) | ||||||
| OI | Object Inherit | ||||||
| OIAM | One In A Million | |
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| OIAP | Object Independent Authorization Protocol | |
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| OIC | Oh, I See | ||||||
| OID | Object Identifier | ||||||
| OIDL | Object Interface Definition Language | ||||||
| OIL | Ontology Inference Layer | ||||||
| OIM | Open Information Model | ||||||
| OIN | |
Open Invention Network | |
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| OISC | One Instruction Set Computer | |
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| OISF | |
Open Information Security Foundation | |
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| OJT | On the Job Training | ||||||
| OLAP | On-Line Analytical Processing | ||||||
| OLE | |
Object Linking and Embedding | |||||
| OLED | Organic Light Emitting Diode | ||||||
| OLI | Originating Line Information | ||||||
| OLM | |
OnLine Mafia | |||||
| OLTM | Optical Line Terminating Multiplexer | ||||||
| O-LTM | Optical Line Terminating Multiplexer | ||||||
| OLTP | On-Line Transaction Processing | ||||||
| OLTS | OnLine Test System | ||||||
| OLX | |
Off-Line eXpress | |||||
| OMA | |
Object Management Architecture |
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| OMA | |
Open Mashup Alliance |
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| OMA | |
Open Mobile Alliance |
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| OMB | |
[U.S.] Office of Management and Budget |
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| OMDOC | Open Mathematical Documents | |
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| OMF | Object Module Format | ||||||
| OMFI | |
Open Media Framework Interchange | |||||
| OMG | Object Management Group (model) | ||||||
| OMG | Oh My God | ||||||
| OML | |
Open Modeling Language | |||||
| OMM | Output Message Manual | ||||||
| OMPF | Operation and Maintenance Processor Frame | ||||||
| OMR | Optical Mark Reader / Optical Mark Reading |
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| OMR | Optical Mark Recognition (technology) |
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| OMT | Object Modeling Technique | ||||||
| ONA | Open Network Architecture | ||||||
| ONAC | Operations Network Administration Center | ||||||
| ONAL | Off Network Access Line | ||||||
| ONE | |
[Sun] Open Net Environment | |
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| ONF | |
Open Networking Foundation | |
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| ONFI | |
Open NAND Flash Interface (sometimes as ONFi) | |
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| ONI | Operator Number Identification | ||||||
| ONNA | Oh No, Not Again | ||||||
| ONNTA | Oh No, Not This Again | ||||||
| ONS | Object Naming Service | ||||||
| ONT | Optical Network Terminal | |
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| ONU | Optical Network Unit | |
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| ONVIF | |
Open Network Video Industry Forum | |
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| OO | |
Object Oriented |
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| OOA | Object Oriented Analysis |
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| OOA | Out Of Area |
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| OOAD | Object Oriented Analysis and Design (sometimes as OOA/D) |
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| OOB | Out Of Band |
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| OOBE | Out-Of-Box Experience |
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| OOD | |
Object Oriented Design |
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| OODB | Object Oriented Database |
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| OODBMS | Object Oriented Database Management System |
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| OODCE | |
Object Oriented Distributed Computing Environment |
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| OODT | |
Object Oriented Data Technology |
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| OOF | Out Of Frame | ||||||
| OOI | Out Of Interest |
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| OOO | |
OpenOffice.org (sometimes as OOo) |
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| OOP | |
Object Oriented Programming |
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| OOPL | Object Oriented Programming Language |
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| OOPSLA | |
Object Oriented Programming Systems, Language and Applications |
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| OOT | Object Oriented Technology |
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| OOTB | Out Of The Blue |
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| OOTB | Out Of The Box (software feature) |
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| OOTC | Obligatory On Topic Comment |
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| OOUI | Object Oriented User Interface |
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| OOV | |
Order of Volatility |
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| OOXML | |
Office Open eXtensible Markup Language (aka OpenXML file format) |
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| OP | Outside Plant | |
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| OPA | |
Oracle Protocol Adapter | |||||
| OPAC | Online Public Access Catalogues | ||||||
| OPAL | On-line Presentation Access Library | ||||||
| OPC | Open Packaging Convensions | ||||||
| OPC | Originating Point Codes | ||||||
| OPCR | Original Program Clock Reference | ||||||
| OPEN | Open Protocol Enhanced Networks | ||||||
| OPEOS | Outside Plant planning, Engineering & construction Operations System | ||||||
| OPI | Open Prepress Interface | ||||||
| OPI | |
Oracle Program Interface | |||||
| OPIE | Open Palmtop Integrated Environment | |
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| OPK | Open Product Key | ||||||
| OPLA | On-screen Product License Agreement | ||||||
| OPM | |
[U.S.] Office of Personnel Management |
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| OPM | Other People's Money |
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| OPM | Outage Performance Monitoring | ||||||
| OPM | Output Protection Management | ||||||
| OPM | Outside Plant Module | ||||||
| OPOS | |
OLE for Point Of Sale | |||||
| OPP | (Bluetooth) Object Push Profile | ||||||
| OPP | |
Optional Program Products | |||||
| OPS | Off Premises Station | ||||||
| OPS | Open Profiling Standard | |
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| OPS | Operations | |
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| OPS | |
Oracle Parallel Server | |||||
| OPSM | Outside Plant Subscriber Module | ||||||
| OPT | |
Open Protocol Technology | |||||
| OPTIC | Optimized Protocol for Transport of Images to Clients |
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| OPX | Off Premises eXtension | ||||||
| OR | Onward Routing | |
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| OR | Originating Register | ||||||
| ORB | |
Object Request Broker |
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| ORB | Office Repeater Bay | ||||||
| ORB | |
Operational Relay Box |
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| ORDB | |
Open Relay DataBase | |
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| ORG | Organization (usually as .org) | ||||||
| ORM | Object-Relational Mapping (sometimes as O/RM) | ||||||
| ORM | Optical Remote Module | ||||||
| ORSD | Object Registration Service Daemon (usually as orsd) | ||||||
| OS | Operating System | ||||||
| OS | Operator Service | ||||||
| OS | Output Spy (ITS) | ||||||
| OS | OutState | ||||||
| OS/2 | |
Operating System/2 | |
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| OSA | Operational Security Assurance | ||||||
| OSA | |
Optical Society of America | |
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| OSAC | Operator Services Assistance Center | |
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| OSAP | Object Specific Authorization Protocol | |
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| OSC | Operator Services Center | ||||||
| OSC | OSCillator | ||||||
| OSCA | |
Open Systems Color Association | |||||
| OSCAR | |
Open Standards for Container/content Allowing Reuse | |||||
| OSCOM | Open-Source Content Management | ||||||
| OSD | |
[U.S.] Office of the Secretary of Defense |
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| OSD | Object-based Storage Device | ||||||
| OSD | |
Open Software Description | |||||
| OSDS | Operating System for Distributed Switching | ||||||
| OSE | Open Systems Environment | ||||||
| OSE | Operating System Environment | ||||||
| OSF | |
Open Software Foundation | |
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| OSF | Operations System Function | ||||||
| OSF/DCE | |
Open Software Foundation Distributed Computing Environment | |
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| OSG | |
Open Services Gateway (standard) | |||||
| OSGI | |
Open Services Gateway initiative (usually as OSGi) | |||||
| OSHA | |
[U.S.] Occupational Safety and Health Administration | |
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| OSI | |
Open Source Initiative | |
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| OSI | Open Systems Interconnect / Open Systems Interconnection (model) | ||||||
| OSI/CS | Open Systems Interconnection / Communications Subsystem | ||||||
| OSID | Originating Signaling Identifier | ||||||
| OSIE | Open Systems Interconnection Environment | ||||||
| OSINET | Open Systems Interconnection NETwork | |
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| OSINT | |
Open Source Intelligence |
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| OSIRM | Open Systems Interconnection Reference Model | ||||||
| OSK | On-Screen Keyboard |
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| OSLC | |
Open Services for Lifecycle Collaboration |
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| OSME | Open Systems Message Exchange | ||||||
| OSO | Originating Signaling Office | ||||||
| OSP | Online Service Provider | |
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| OSP | OutSide Plant | ||||||
| OSPF | Open Shortest Path First (protocol) | ||||||
| OSPS | Operator Service Position System | ||||||
| OSR | OEM Service Release | ||||||
| OSRM | Open Source Risk Management | ||||||
| OSS | Open Source Software | ||||||
| OSS | Operational Support System | ||||||
| OSS | Operations Support Services | ||||||
| OSS | Operator Service System | ||||||
| OSSWG | Office System Standards Work Group | ||||||
| OSTA | |
Optical Storage Technology Association |
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| OSTC | Open Systems Testing Consortium | ||||||
| OSTP | Office of Science and Technology Policy | ||||||
| OSWD | |
Open Source Web Design | |
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| OSWS | Operating System WorkStation | ||||||
| OT | Object Technology | ||||||
| OT | Off Topic | |
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| OTA | |
(Congressional) Office of Technology Assessment | |
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| OTA | Over The Air | ||||||
| OTC | Operating Telephone Company | ||||||
| OTC | Over-The-Counter | |
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| OTDR | Optical Time Domain Reflectometer | ||||||
| OTE | Off Track Excursion / Off Track Experience | ||||||
| OTF | Object Testing Framework | ||||||
| OTF | On The Floor | ||||||
| OTG | On-The-Go | ||||||
| O-T-G | On-The-Go | ||||||
| OTL | OSI Testing Liaison | ||||||
| OTOH | On The Other Hand | ||||||
| OTOOH | On The Other Other Hand | ||||||
| OTP | On The Phone | ||||||
| OTP | One Time Password | ||||||
| OTP | One Time Programmable | ||||||
| OTP | Order Transaction Processing | ||||||
| OTQ | Out-going Trunk Queuing | ||||||
| OTS | |
Object Transaction Service | |||||
| OTS | Off The Shelf | ||||||
| OTT | Off The Topic | ||||||
| OTT | Over The Top | ||||||
| OTTH | On The Third Hand | ||||||
| OTTOMH | Off The Top Of My Head | |
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| OU | Organizational Unit | |
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| OUI | |
Organizationally Unique Identifier | |
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| OURS | |
Open User Recommended Solutions (user group) | |||||
| OUTWATS | OUTward Wide Area Telecommunications Service | ||||||
| OV | |
[HP] OpenView | |
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| OV | Organization Validation |
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| OVAL | |
Open Vulnerability and Assessment Language |
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| OVD | Optical Video Disk | ||||||
| OVDA | |
Optical Video Disc Association | |||||
| OVF | Open Virtualization Format | ||||||
| OW | Over - Write | ||||||
| OWASP | |
Open Web Application Security Project |
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| OWF | One-Way Function | ||||||
| OWF | Optimum Working Frequency | ||||||
| OWL | |
Object Windows Library | |||||
| OWL | |
Web Ontology Language (not an actual acronym) |
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| OWN | |
Oprah Winfrey Network | |
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| OWP | |
Open Web Platform |
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| OWRTS | Open - Wire Radio Transmission System | ||||||
| OWTL | Open - Wire Transmission Line | ||||||
