- measured signal
- measurement antenna
- measurement point
- measurement setup
- maser amplifier
- mask carrier
- mask generation
- mask runout
- mask set
- mass dummies
- master card
- master oscillator
- Master Password
- master pattern
- master processor
- master pulse
- master station
- master tape
- master trace
- matched diodes
- matched filter
- matched terminal
- matched transistors
- matched tubes
- matching impedance
- mechanical modulation
- mechanical recorder
- mechanical splice
- median contours
- median level
- median loss
- medical advice
- medical adviser
- medical examination
- medium rate
- member code
- member name
- memory allocation
- memory configuration
- memory content
- memory paging
- memory sharing
- memory size
- memory speed
- memory transistor
- merchant chip
- merge file
- mesh probe
- measuring amplifier
- measuring decoder
- measuring network
- measuring signal
- measuring system
- measuring technical
- mechanical gimbals
- mechanical storage
- median field
- meissner oscillator
- member index
- memory board
- memory effect
- memory element
- memory rate
- memory tube
- menu selection
- mercury laser
- metaharmonic function
- metallic crosspoint
- MF generator
- microcell
- microchip
- microdtrip aerial
- microphone cancellation
- microstrip antenna
- microthrust
- microwave attenuation
- microwave cavity
- microwave circulator
- microwave link
- microwave mixer
- microwave oscillator
- microwave radar
- microwave spectrometer
- microwave substrate
- middle atmosphere
- midline capacitor
- meson
- mesopause
- message circuit
- Message Discrimination
- message pager
- message register
- message route
- message routing
- message switching
- message system
- meta-magnetic
- meta-symbol
- meteorological aids
- metering rate