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UDDI

Universal Description Discovery and Integration
A platform-independent framework for describing services, discovering businesses, and integrating business services using the Internet.

Uncompressing

Uncompressing (or decompressing) is the act of expanding a compression file back into its original form.

Unconference

A term used to describe events with little structure, where the attendees drive the agenda and freely form new discussions and sub-groups as ideas emerge.

Undeleting

Undeleting is the process of recovering data that has been deleted from a storage medium, usually the hard drive of a computer. The process can also be done with some e-mail programs.

Universal Search

Also known as blended, or federated search results, universal search pulls data from multiple databases to display on the same page. Results can include images, videos, and results from specialty databases like maps and local information, product information, or news stories.

Unix

Unix is an operating system that originated at Bell Labs in 1969 as an interactive time-sharing system.

Unpaid media

The author does not pay for content creation and placement. Examples include blogs, communities, social networks.

UNZIP

To uncompress a ZIPPED file.

Upgrade

In computers, an upgrade is a new version of or addition to a hardware or, more often, software product that is already installed or in use.

Uploading

Uploading is the transmission of a file from one computer system to another, usually larger computer system. From a network user's point-of-view, to upload a file is to send it to another computer that is set up to receive it.

URI

Uniform Resource Identifier
Term used to identify resources on the internet. URL is one type of an URI.

URL

Uniform Resource Locator
An URL is the unique address for a file that is accessible on the Internet. A common way to get to a Web site is to enter the URL of its home page file in your Web browser's address line.

USB

Universal Serial Bus
USB is a plug-and-play interface between a computer and add-on devices (such as audio players, joysticks, keyboards, telephones, scanners, and printers).

USB Drive

A USB drive, also known as a flash drive or keychain drive, is a plug-and-play portable storage device that uses flash memory and is lightweight enough to attach to a key chain.

Usenets

Also known as news groups, are user-submitted notes on various subjects. Each subject is a newsgroup. Like boards, they are highly interactive.

User Generated Content (UGC)

UGC refers to various kinds of media content that are produced or primarily influenced by end-users vs. traditional content publishers. This is a broad term that describes online tools that allow users to share and express content, such as blogs, wikis, and podcasts.