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Glossary of Mac and Apple Terminology: U-Z

Definitions of common terms, words, and technical jargon associated with Apple and the Macintosh computer.

0-9 | A-D | E-H | I-L | M-P | Q-T | U-Z
USB
USB (Universal Serial Bus) is a uniform connector designed to simplify the process of connecting peripherals, such as printers or keyboards, to a computer.
Virus
A virus is a software program, usually designed to cause harm, that is installed and run without your knowledge.
Volume
A volume is a storage container that has been formatted with a file system that your computer (in this case, a Mac) can recognize. Common types of volumes include CDs, DVDs, hard drives, and partitions or sections of hard drives.
Wi-Fi
Wi-Fi (Wireless Fidelity) usually refers to a wireless networking system that uses any of the 802.11 wireless networking protocols.
Widgets
Widgets are small applications that run in a confined environment in OS X known as Dashboard. You can easily create your own widgets using basic Web development methods.
Worm
A worm is a form of malware, or malicious software. A worm is similar to a virus, but unlike a virus, it doesn't need any help from humans to spread. It can spread from computer to computer on its own volition.
XML
XML (eXtensible Markup Language), like HTML, is a language used to design and format web pages. XML, a subset of SGML (Standard Generalized Markup Language), offers more flexible formatting options than HTML does.
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