Object / noun C [21] an object-oriented programming module that has its own properties created by bundling data and program instructions together
(Microsoft) Office / noun U [8,22] a widely-used application package developed by the Microsoft Corporation that includes programs used in a typical office,e.g.a wordprocessor spreadsheet and database
Open Source / adj [6] part of a system of software development where anyone is free to take a copy of the source code and extend develop or fix bugs in is
Optical fibre / noun C [23] a common name for glass fibre cable used in high speed networks. It enables data signals to be transmitted using laser light.
Optical media / noun U [19] data storage material that is written to or read from using taser light
ORACLE / noun U [22] a widely used database management system
OS/ noun C [6] abbreviation for operating system