You have come upon the archive of information starting with the letter O. For some time CKnow was not collecting acronyms and definitions but now is. This page shows the older entries with links to the current pages. Use the links below to jump to a specific entry in the archive. A more complete list of all current and archived acronyms and definitions is here.

• OC = Optical Carrier
• OCR = Optical Character Recognition
• OCX = OLE Custom Control
• ODBC = Open Database Connectivity
• ODI = Open Data-link Interface
• OEM = Original Equipment Manufacturer
• OIM = Open Information Model
• OLAP = Online Analytical Processing
• OLE = Object Linking and Embedding
• OLED = Organic Light-Emitting Diode
• OLTP = On-Line Transaction Processing
• OMG = Object Management Group
• OOP = Object-Oriented Programming
• OpenSRS = Open Shared Registration System
• OPSEC Alliance = Open Platform for Secure Enterprise Connectivity Alliance
• OSF = Open Software Foundation
• OSI = Open System Interconnection
• OSPF = Open Shortest Path First
• OSR = OEM System Release
• OTOH = On The Other Hand