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PC Glossary

Definitions of Computer and Internet Terms

Computer Terms Beginning with "M"

MAC Address Stands for "Media Access Control Address," and no, it is not related Apple Macintosh computers. A MAC address is a...
Mac OS This is the operating system that runs on Macintosh computers. It is pronounced, "mack-oh-es." The Mac OS has been...
Macintosh This is the name of the computers that are made by Apple Computer. The first Macintosh was introduced in 1984 and was...
Macro Macro has two computer-related definitions, both of which involve making your computer experience more efficient. ...
Mainframe A mainframe is an ultra high-performance computer made for high-volume, processor-intensive computing. They are...
Malware Short for "malicious software," malware refers to software programs designed to damage or do other unwanted actions on...
MANET Stands for "Mobile Ad Hoc Network." A MANET is a type of ad hoc network that can change locations and configure itself...
Markup Language A markup language is a type of syntax used for defining elements within a document, such as a webpage or data file. It...
Mashup The term "mashup" has several meanings. It was originally used to describe songs that meshed two different styles of...
Maximize Maximizing a window makes it larger. In Windows, a maximized window fills the entire screen, while on a Mac, it takes...
Mbps Stands for "Megabits Per Second." One megabit is equal to one million bits or 1,000 kilobits. While "megabit" sounds...
MBR An MBR, or "master boot record," is a special section on a hard disk that defines the disk partitions and contains the...
MCA Stands for "Micro Channel Architecture." It is an expansion bus created by IBM that was used in the company's PS...
Mebibyte A mebibyte is a unit of data storage that equals 2 to the 20th power, or 1,048,576 bytes. While a megabyte can be...
Media In general, "media" refers to various means of communication. For example, television, radio, and the newspaper are...
Megabyte A megabyte is 2 to the 20th power, or 1,048,576 bytes. It can be estimated as 10 to the 6th power, or one million...
Megahertz One megahertz is equal to one million cycles per second. It is used to measure transmission speeds of electronic...
Megapixel A megapixel is one million pixels. It is commonly used to describe the resolution of digital cameras. For example, a...
Memory Just like humans, computers rely a lot on memory. They need to process and store data, just like we do. However...
Memory Bank A memory bank is an individual section of data stored in a computer's memory. It typically contains data that only...
Memory Leak A memory leak is like a virtual oil leak in your computer. It slowly drains the available memory, reducing the amount...
Memory Module A memory module is another name for a RAM chip. It is often used as a general term used to describe SIMM, DIMM, and...
Memory Stick Memory Stick is a type of flash memory developed by Sony. It is used to store data for digital cameras, camcorders...
Menu Bar A menu bar is a horizontal strip that contains lists of available menus for a certain program. In Windows programs...
Meta Search Engine Meta search engines are search engines that search other search engines. Confused? To put it simply, a meta search...
Meta Tag This is a special HTML tag that is used to store information about a Web page but is not displayed in a Web browser...
Metadata Metadata describes other data. It provides information about a certain item's content. For example, an image may...
Metafile A metafile can refer to two different types of computer files. The first is a file that describes the contents of...
MIDI Stands for "Musical Instrument Digital Interface." It is a connectivity standard that musicians use to hook together...
Mini DV Most digital camcorders record video and audio on a Mini DV tape. The cassettes measure 2.6 x 1.9 x 0.5 inches (L x W...
Minimize Minimizing a window temporarily hides it from view without closing it. In Windows, a button for the minimized window...
MIPS Stands for "Million Instructions Per Second." It is a method of measuring the raw speed of a computer's processor...
Mirror A mirror is something that you can see your reflection in. Most mirrors consist of a sheet of glass with a sheet of...
Mirrored Volume A mirrored volume is a hard drive or other form of storage media that stores an exact copy of the data from another...
Mnemonic A mnemonic (pronounced "nemonic") is a pattern that can be used as an aid for memorizing information. Most often, this...
Modem The word modem is actually short for Modulator/Demodulator. (There's something you can really impress your friends...
Modifier Key A modifier key is a key that modifies the action of another key when the two are pressed together. Common modifier...
Monitor The term "monitor" is often used synonymously with "computer screen" or "display." The monitor displays the computer's...
Moodle Stands for "Modular Object-Oriented Dynamic Learning Environment." Moodle is an open source course management system...
Motherboard The motherboard is the main circuit board of your computer and is also known as the mainboard or logic board. If you...
Mount In order for a hard disk or disk partition to be accessible by a computer, it must first be mounted. This is a...
Mouse A mouse, along with the keyboard, is one of the two main input devices used by computers. It is a small handheld...
MP3 Stands for "MPEG-1 Audio Layer-3." MP3 is popular compressed audio file format that helped popularize digital music...
MPEG Stands for "Moving Picture Experts Group." The MPEG organization, which works with the International Organization for...
MTU Stands for "Maximum Transmission Unit." MTU is a networking term that defines the largest packet size that can be sent...
Multimedia As the name implies, multimedia is the integration of multiple forms of media. This includes text, graphics, audio...
Multiplatform If a software program is developed for mulitple operating systems, it is considered to be "multiplatform." Since...
Multiprocessing For many years, the speed of computer processors increased through improvements in the architecture and clock speed of...
Multitasking Multitasking is processing multiple tasks at one time. For example, when you see someone in the car next to you eating...
Multithreading Multithreading is similar to multitasking, but enables the processing of multiple threads at one time, rather than...
MySpace MySpace is an online community that allows friends to keep in touch and meet new people as well. It started out as a...
MySQL MySQL, pronounced either "My S-Q-L" or "My Sequel," is an open source relational database management system. It is...

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