- memory print
- memory printout
- memory rate
- memory refresh
- memory segment
- memory space
- memory switch
- memory tube
- memory typewriter
- memos
- mention
- menu are
- menu bar
- menu command
- menu item
- menu parameter
- menu picking
- menu selection
- menu system
- menu-oriented
- mephitic
- mercury memory
- mercury storage
- merge cells
- merge order
- merge search
- merged subdocument
- merger
- merging documents
- meridian section
- metacomplete
- metafile interpreter
- metallic media
- metasyntax
- metrics
- MFM recording
- micro-code
- microcell
- microchannel card
- microchip
- microcopy
- microelectronic circuit
- microelectronic system
- microform reader
- microminiature circuitry
- microprogramming
- microrelay
- microroutine
- microwave amplifier
- microwave link
- microwave transmitter
- midbody
- middle speed
- middle unit
- MIDI cuing
- MIDI port
- migration
- mild steel
- milligenry
- message authentication
- message buffer
- message circuit
- message filter
- message handler
- message handling
- message identification
- message line
- message mode
- message processing
- message routing
- message set
- message sink
- message storage
- message structure
- message switching
- message tag
- message transfer
- messaging service
- meta assembly
- meta-file
- meta-rule
- meta-variable
- metabelian group
- metabelian product
- metacyclic
- metafile element
- metalanguage
- metalinguistic formula
- metallize
- metamathematics
- metarule
- metering circuit
- metric group
- metric isomorphism
- metric property
- metric tensor
- metrically dense
- mhz
- microampere
- microelectronic technique