- OSP (Online Service Provider)- Operator Service Provider. This is a service provided to handle long distance or toll call traffic for certain (usually public) phones.
- Open Source-In general, open source refers to any program whose source code is made available for use or modification as users or other developers see fit.
- Out of Gamut-a colour that cannot be reproduced accurately by the device processing the image.
- Opacity-The amount of light obscured by particulate pollution in the air; clear window glass has zero opacity, a brick wall is 100 percent opaque. Opacity is an indicator of changes in performance of particulate control systems.
- Photoshop-A professional image-editing and graphics creation software from Adobe. It provides a large library of effects, filters and layers.
- PDA (Personal Digital Assistant)-Personal Digital Assistant) A handheld device that combines computing, telephone/fax, Internet, and networking features. A typical PDA can function as a cellular phone, fax sender, Web browser, and personal organizer.
- Portal-A Web site “gateway” that provides multiple services, which could include Web searching capability, news, free-email, discussion groups, online shopping, references and other services.
- Path (file/folder path)-A path is the general form of a file or directory name, giving a file’s name and its unique location in a file system. .
- Plug In-A program that must be downloaded to view particular content such as animations.
- Podcast-means a specific type of Broadcast, where the Work is incorporated into a file (which may contain one or more works and/or other material)
- Pixel-The smallest mark or dot on a screen. Short for picture element.
- PNG file-PNG (Portable Network Graphics) is a bitmapped image format that employs lossless data compression. PNG was created to improve and replace the GIF format, as an image-file format not requiring a patent license.
- Pixellated-In computer graphics, pixelation is an effect caused by displaying a bitmap or a section of a bitmap at such a large size that individual pixels, small single-colored square display elements that comprise the bitmap, are visible to the eye.
- PDF File-Portable Document Format. A computer file that contains a viewable and printable tariff document. The Acrobat Reader is needed to view tariffs.
- Proxy Server-A proxy server is used in larger companies and organizations to improve network operations and security. It can be used to prevent direct communication between two or more networks