Appendix Acronyms O

In the left margin you will find links to the acronyms categorised alphabetically. Some of the pages are quite long and may take a few moments to load if you use a modem.

Acronyms - O

OA Office Automation

OA Overeaters Anonymous

OAO Orbiting Astronomical Observatory [Space]

OAS Organization of American States

OATS Office Automation Technology and Services

OBE Order of the British Empire

OBS Omni Bearing Selector

OC Order of Canada

OCDM Office of Civil Defense and Mobilization

OCI Out of City Indicator

OCLC Online Computer Library Center, Inc.

OCLC Online Computer Library Center (Ohio College Library Catalog)

OCO Object Code Only

OCR Optical Character Recognition

OCS Officer Candidate School

OCST Office of Commercial Space Transportation [Space]

OD Doctor of Optometry

OD Oculus Dexter (right eye)

OD Officer of the Day

OD OverDose

ODI Optical Digital Image

ODISS Optical Digital Image Storage System

ODT Octal Debugging Technique

ODT Online Debugging Technique

OE Old English

OED Oxford English Dictionary

EM Original Equipment Manufacturer

OEO Office of Economic Opportunity

OES Order of the Eastern Star

OEXP Office of Exploration [NASA]

OF Old French

OFM Order of Friars Minor

OFS Order of Free State

OG Original Gum

OH Ohio

OIRA Office of Information and Regulatory Affairs

OIU Office Interface Unit

OJT On the Job Training

OLTP On-Line Transaction Processing

OMB Office of Management and Budget [US Government]

OMD Orchestral Manouevers in the Dark

OMS Orbital Maneuvering System [Space]

OMV Orbital Maneuvering Vehicle [Space]

ON Old Norse

ONC Open Network Computing

ONI Office of Naval Intelligence

ONI Operator Number Identification [Telephony]

ONR Office of Naval Research

OOP Object Oriented Programming

OOPART Out Of Place ARTifact

OOPS Object-Oriented Programming System

OP Observation Post

OP OFFICEPOWER office automation system, trademark of CCI

OP Order of Preachers

OP Out of Print

OPEC Organization of Petroleum Exporting Countries

OPF Orbiter Processing Facility [Space]

OPM Office of Personnel Management

OPUS Obvious Password Utility System (Eugene Spafford <Spaf@Purdue.Edu>)

OR Operating Room

OR Oregon

OR Owner's Risk, Own Risk

ORFEUS Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer [Space]

ORNL Oak Ridge National Laboratory

OROM Optical Read Only Memory

OS Oculus Sinister (left eye)

OS Operating System

OS Ordinary Seaman

OS Out of Stock

OSB Order of St. Benedict

OSC Orbital Sciences Corporation [Space]

OSCAR Orbiting Satelite Carry Amateur Radio (1st launched 12 Dec 1961)

OSCAR Orbiting Satellite Carry Amateur Radio (1st launched 12 Dec 1961)

OSCAR Orbiting Satellite Carrying Amateur Radio [Space]

OSCRL Operating System Command Response Language

OSD Office of the Secretary of Defense

OSDIT Office of Software Development and Information Technology

OSF Open Software Foundation

OSF Open Systems Foundation

OSF Order of St. Francis

OSHA Occupational Safety and Health Administration [US Government]

OSI Office of Scientific Integrity [NIH]

OSI Open Systems Interconnection (per ISO; 7 layer model)

OSI/RM Open Systems Interconnection/Reference Model

OSME Open Systems Message Exchange

OSP Optical Storage Processor

OSPFIGP Open Shortest-Path First Internal Gateway Protocol [Internet]

OSS Office of Strategic Services (later CIA)

OSS Office Support System

OSS Operation Support System [Telephony, AT&T]

OSSA Office of Space Science and Applications [Space]

OSSE Oriented Scintillation Spectrometer Experiment (on GRO) [Space]

OSTP Office of Science and Technology Policy

OSTP (White House) Office of Science and Technology Policy [US Government]

OT Old Testament

OT OverTime

OTA Office of Technical Assistance

OTA Office of Technology Assessment

OTA Optical Telescope Assembly (on HST) [Space]

OTB Off-Track Betting

OTC Over The Counter (stocks)

OTF Open Token Foundation

OTH-B Over The Horizon - Backscatter (as in radar)

OT&LF Open Taxi & Limousine Foundation

OTR On The Rag

OTS Officers' Training School

OTV Orbital Transfer Vehicle [Space]

OUTWATS OUTward Wide Area Telephone Service [Telephony]

OV Orbital Vehicle [Space]

OV Orbiter Vehicle [Space]