Asynchronous JavaScript And XML. A programming technique for creating interactive Web applications. Small amounts of data are exchanged as needed instead of pulling entire Web pages to be reloaded each time the user makes a change.
Advanced Research Projects Agency Network The precursor to the Internet, it was a network developed in the late 1960s and early 1970s by the U.S. Department of Defense. As an experiment in wide area networking (WAN), ARPANet was developed with the goal of being robust enough to survive a nuclear war. Part of the experiment was to study how distributed, noncentralized networks work.


Binary Numbers
Any downloadable file that contains more than simply human-readable, ASCII text. Typically, it refers to a program available for download, but it can also refer to pictures, sounds, or movies, among other things.
The basic unit of information in a binary numbering system, it takes 8 bits to make up a byte.
a.k.a. Web browser A program used to view, download, upload, surf, or otherwise access documents (for example, Web pages) on the Internet.


The action of storing Web files for later reuse so that they can be accessed more quickly by the end-user. When you are on the Web, the cache improves your Web browsers performance - See more at.
Cloud computing
A style of computing in which dynamic, scalable and virtual resources are provided over the Internet. Cloud computing refers to services that provide common business applications online, which are accessed from a Web browser, while the software and data are stored on the servers.


A computer software setting or preference that states what will automatically happen in the event that the user has not stated another preference.
instruction that associates a particular SGML or XML document (for example, a webpage) with a document type definition
The Domain Name System (DNS) helps users to find their way around the Internet. Every computer on the Internet has a unique address.


A software program used to write and edit HTML code.
E-mail is mail that is electronically transmitted by your computer. As opposed to snail mail, e-mail sends your messages instantaneously, anywhere in the world.


Frequently Asked Questions (pronounced: F-A-Q or fak) A list of questions and answers related to a Web site, newsgroup, software, or any kind of product or service.
Firefox is an open source browser organized by the folks at Mozilla that empowers users to browse faster, more safely and more efficiently than other browsers.
a.k.a. typeface The type and style of text letters and characters you see in documents, Web pages, and graphical images of words (images that look like they are typed or written).
File Transfer Protocol The standard method for downloading and uploading files over the Internet. With FTP, you can login to a server and transfer files (meaning you can send or receive files).


abbreviated as G -or- GB A unit of measurement approximately equal to 1 billion bytes. A gigabyte is used to quantify memory or disk capacity. One gigabyte equals 1,000MB (actually 1,024 megabytes).
Founded in 1998 by Larry Page and Sergey Brin, two Stanford Ph.D. candidates who developed a technologically advanced method for finding information on the Internet, its most famous product is a hybrid search engine that ranks the popularity of results that match your keyword search. It has an index of billions of Web
A picture or still image generated on a computer. There are two basic types of computer-generated graphics: object-oriented graphics (vector graphics) and bitmapped graphics (raster graphics).


Hypertext Markup Language The lingua franca for publishing hypertext on the World Wide Web. HTML is a nonproprietary format based on SGML.
HyperText Transfer Protocol The standard Internet protocol for the exchange of information on the World Wide Web.
a.k.a. link -or- a link The text or graphics on a Web site that can be clicked on with a mouse to take you to another Web page or a different area of the same Web page. Hyperlinks are usually created (or coded) in HTML.


a.k.a. the Net (also seen as internet -- with a lowercase i) The most important technological innovation of our generation, the Internet is actually a network of networks. Originally designed by the U.S. Department of Defense so that a communication signal could withstand nuclear war and serve military institutions worldwide, the Internet was first known as the ARPANet, the most robust communication technology.
Internet Protocol -or- Intellectual Property The set of technology standards and technical specifications that enable information to be routed from one network to another over the Internet. It is the way networks exchange data with each other.
Internet Service Provider A company that provides users access to the Internet. Before you can connect to the Net, you must first establish an account with an ISP.


Joint Photographic Experts Group, a.k.a. JPEG (pronounced: jay-peg) One of the two most common types of image formats used on the World Wide Web (the other being GIF). The shorter extension, JPG (without the E), is usually used in association with PC platform files.


abbreviated as KB -or- kbyte A unit of measurement equivalent to one thousand bytes of computer memory or disk capacity. For example, a device that has 256K of memory can store approximately 256,000 bytes (or characters) at one time.


Local Area Network (pronounced: lan) A network that connects computers in a relatively small, predetermined area (such as a room, a building, or a set of buildings). LANs can be connected to each other over telephone lines and radio waves.
Local Computer
also referred to as: locally In a LAN or on the Internet, this is the computer you are using. As opposed to remote, which means off-site or somewhere else, local means on-site or what is in front of you.


abbreviated as M -or- MB A million bytes or one thousand kilobytes
Meta Tag
a.k.a. meta-tag An HTML tag that contains information about a Web page. Some search engines, such as AltaVista, use spiders that index Web pages based on meta tags.


The act of moving around the Web by clicking on hypertext links (or paths) that take you from one Web page to another.
The code of conduct and unofficial rules that govern online interaction and behavior, it comes from net plus etiquette.
The term actually has many different meanings depending on the person, company, or context in which it is being used. Basically, it is a collection of two or more computers and associated devices that are linked together with communications equipment.


Open Source
Gamer jargon, also known as text message shorthand, used in gaming, texting, online chat, instant messaging, email, blogs, and newsgroup postings.
Operating System
Gamer jargon, also known as text message shorthand, used in gaming, texting, online chat, instant messaging, email, blogs, and newsgroup postings.


(pronounced ping as in ping-pong; for Portable Network Graphics) is a file format for image compression that, in time, is expected to replace the Graphics Interchange Format (GIF) that is widely used on todays Internet.


A question or request to find a particular file, Web site, record, or set of records in a search engine or database.
(pronounced: kwer-tee) An acronym that refers to a standard keyboard (as identified by the first six letters in the upper row).


Hardware inside your computer that retains memory on a short-term basis and stores information while you work.
Red, Green, Blue The three colors that create all of the other colors on a computer screen.
Really Simple Syndication -or- Rich Site Summary Put simply, an RSS feed is a format for distributing and gathering content from sources across the Web, including newspapers, magazines, and blogs.


Serial Port
A connection point on a computer, it is used to connect a serial interface device (such as a mouse or modem) to the system. Serial ports are typically identified as COM ports, and most computers come with two (often with the capacity to add more).
A host computer on a network, it houses information and responds to requests for information (for example, it houses Web sites and executes their links to other Web sites). The term server also refers to the software that makes the act of serving information possible. Commerce servers, for example, use software to run the main functions of an e-commerce Web site, such as product display, online ordering, and inventory management (you will also hear this described as shopping cart technology).
Synonymous with a crawler, this is a program that searches the Internet and attempts to locate new, publicly accessible resources, such as WWW documents, files available in public FTP archives, and Gopher documents.


In Web programming languages, it is the code that describes a command or instruction so that a Web browser will be able to interpret and display it. In order to link an image or word on a Web page, you must put specific tags around the image or word in the code. This is known as basic HTML and it is pretty easy. Look up the HTML definition for more info.


To copy a file from your local computer to a server or host system; the reverse process of download.
a.k.a. users -or- visitors A term that defines the online audience, it also refers to anyone who uses a computer. The term users rubs some people the wrong way because, in the past, if you said you were a user, it meant you were habitually consuming an illicit drug.


A simulation of the real thing, it means the same as almost. You will see this term appear before various Internet terms to indicate a simulation technology that enables you to cross boundaries and experience something without needing it to be physically present, as in virtual sex, virtual theme parks, and virtual communities.
Virus (Computer Virus)
Well-known viruses include: Stuxnet, Duqu, Flame, Wiper, I Love You, code red, NIMDA, Heartbleed, Shellshock A software program that replicates on computer systems by incorporating itself into shared programs.


World Wide Web Consortium An organization that exists to realize the full potential of the Web, it is a special interest group comprised of programmers, Web developers, execs in the industry, and users who help define specifications for the development of Web technology. Be sure to also read through these definitions: HTTP, P3P, RDF, XML
Wide Area Network, a.k.a. WLAN (Wireless Local Area Network) (pronounced: wan) A network that uses high-speed, long-distance communications cables or satellites to connect computers over distances greater than those traversed by LANs (which range about two miles). The Internet itself is considered a WAN.
a.k.a. the Web see: World Wide Web
Web Host
a.k.a. Web site hosting, website hosting The business of providing the equipment and services required to host and maintain files for one or more Web sites and to provide fast Internet connections to those sites. Most hosting is "shared," which means that Web sites of multiple companies are on the same server in order to share costs.
What You See Is What You Get (pronounced: whiz-ee-wig) An acronym for a technology that allows you to view or print a document exactly as it looks. This term has also morphed into an expression used in online dating sites.


is a family of XML markup languages that mirror or extend versions of the widely used Hypertext Markup Language
eXtensible Markup Language A programming language/specification developed by the W3C. XML is a pared-down version of SGML, designed especially for Web documents.


Yahoo! Inc. It is been said that Yahoo stands for Yet Another Hierarchical Officious Oracle, but then again, many things have been said about this company. Based on the Web site created by David Filo and Jerry Yang of the Department of Computer Science at Stanford University, Yahoo! is one of the Webs most popular destinations and is considered the poster child of the first generation of the Internet.


electronic magazine (pronounced: zeen or zyn) The nickname for an electronic magazine. Just like their real-world counterparts, online magazines primarily derive revenue from ad banner sales. Broadly speaking, a zine is any Web site that publishes content.
A Windows-based compressed file. ZIP is the industry standard for data compression technology, in part because it can hold directory structures in addition to files. On the Net, large graphics and programs are usually compressed as ZIP files and then made available for download.