Page content section :
Glossary : O
A to Z of commonly used abbreviations and acronyms
Aa : Bb : Cc : Dd : Ee : Ff : Gg : Hh : Ii : Jj : Kk : Ll : Mm : Nn : Oo : Pp : Qq : Rr : Ss : Tt : Uu : Vv : Ww : Xx : Yy : Zz : Nos 1-9
- OA : Output Area
- OASIS : Organisation for the Advancement of Structured Information Standards
- OBO : the Order of the Bleeding Obvious
- OCN : Open College Network
- OCR : Optical Character Recognition (when scanning in text and converting it to an editable text-file rather than an image file)
- OCS : One Complete Solution
- OCSP : Online Certificate Status Protocol
- OCT : Optical Coherence Tomography
- OD : Ordnance Datum
- ODD : Oppositional defiant disorder
- ODD : Optical Disk Drive
- ODF : Open Document Format
- ODI : The Office for Disability Issues
- ODIN : Occupational Disease Intelligence Network
- ODPM : Office of the Deputy Prime Minister
- OECD : Organisation for Economic Co-operation and Development
- OED : Oxford English Dictionary
- OeE : Office of the e-Envoy
- OEM : Original Equipment Manufacturer
- OFFJAGS : Officer Joint Advisory Group
- Ofgas : Office of Gas and Electricity Markets
- Oftel : Office of Telecommunications
- Ofwat : Office of Water Services
- OGC : Office of Government Commerce
- OGC : Open GIS Consortium
- OHP : Overhead Projector
- OJEU : Official Journal of the European Union
- OLACMLA : Overly Long And Complicated Multiple Letter Acronym
- OLAP : online analytical processing
- OLE : Object Linking and Embedding
- ONS : Office for National Statistics / Office of National Statistics
- OOAK : One Of A Kind
- OOB : Out of Band
- OOP : Object oriented programming
- OOP : Object Oriented Programming
- OPRA : Occupational Physicians Reporting Activity
- OPSI : Office of Public Sector Information
- ORR : Office of the Rail Regulator
- OS : Ordnance Survey
- OSA : Open Source Academy (www.opensourceacademy.gov.uk)
- OSGR : Ordnance Survey Grid Reference (see also NGR)
- OSLO : Ordnance Survey Liaison Officer
- OSS : One Stop Shop
- OSS : Open Source Software
- OSSA : Occupational Surveillance Scheme for Audiologists
- OSSTMM : Open Source Security Testing Methodology Manual
- OT : Occupational Therapy
- OU : Operational Unit
- OWL : Overwhelmingly Large Telescope (www.eso.org/projects/owl/) - see also ELT and VLT
- oz or ozs : Ounce or Ounces
If you would like to add to these lists then please send your suggestions to the webmaster for consideration for inclusion.

