The following terms starting with the letter "M" have specific pages dedicated to them. You can come back to this page or the main Computer Terms page by using the navigation breadcrumbs at the bottom of each page.

• Machine Language = Binary commands used by the computer hardware
• Macro = Stored list of commands
• MAE = Metropolitan Area Exchange (Ethernet)
• Mail Merge = Combination of a database and document
• MAN = Metropolitan Area Network
• MAPI = Messaging Application Programming Interface
• Mapping = Way of converting encoded data
• MARS = Multi-player Animated Role-playing System
• Mashup = Web site or application developed from combinations of content.
• Mask = A pattern or outline
• MathML = Mathematical Markup Language
• MAU = Media (Multistation) Access Unit
• MAU = Multistation Access Unit
• Mb = Megabit
• MB = Megabyte
• Mbps = Megabits per second
• MBR = Master Boot Record
• MCA = Micro Channel Architecture
• MCGA = Multi-Color Graphics Array
• MCI = Media Control Interface
• MDA = Monochrome Display Adapter
• MDC = Metadata Coalition
• MDI = Multiple Document Interface
• MDIS = Metadata Interchange Specification
• MEMS = MicroElectro-Mechanical System
• MFLOPS = Millions of Floating Point Operations per Second
• MFM = Modified Frequency Modulation
• MIB = Management Information Base
• MICR = Magnetic Ink Character Recognition (Reader)
• MIDI = Musical Instrument Digital Interface
• MIF = Management Information Format
• MILNET = Military Network
• MIME = Multipurpose Internet Mail Extension
• MIPS = Millions of Instructions Per Second
• MIS = Management Information System (or Services)
• MLC = Multilevel Cell
• MMDS = Multichannel Multipoint Distribution System
• MMU = Memory Management Unit
• MMX = Matrix Math Extensions (Multimedia Extensions)
• MNG = Multiple-image Network Graphics
• MNP = Microcom Networking Protocol
• MODEM = Modulator/Demodulator
• Modular Programming = Small elements of a larger whole
• MOF = Meta Object Facility
• MOO = Mud, Object Oriented
• MOS = Metal Oxide Semiconductor
• MOSFET = Metal Oxide Semiconductor Field Effect Transistor
• MOSIS = MOS Implementation System
• MOSS = Mime Object Security Services
• MP3 = MPEG layer 3
• MPC = Matchbox PC
• MPC = Multimedia Personal Computer
• MPEG = Motion Picture Experts Group
• MPI = Message Passing Interface
• MRC = Magneto-Resistive Cluster
• MS-DOS = Microsoft Disk Operating System
• MSN = Microsoft Network
• MTA = Media Terminal Adapter
• MTBF = Mean Time Between Failure
• MTU = Maximum Transmission Unit
• MUD = Multiple User (or Multi-User) Dungeon (Dimension)
• Multiplex or Multiplexing = Combination of two or more channels into one
• MUSH = Multi-User Shared Hallucination
• MVS = Multiple Virtual Storage