- multiwave
- musa
- mute
- muting device
- mutual interference
- nadir
- narrow pulse
- narrow ssb
- national code
- national network
- national traffic
- natural interference
- natural noise
- natural period
- natural disaster
- natural joint
- natural selection
- navigation instrument
- navigational radar
- negative acknowledgement
- negative branch
- negative correlation
- negative instruction
- negative logic
- negative modulation
- negative photoresist
- negative ray
- nested interrupt
- net user
- network breakdown
- network carrier
- network file
- network gateway
- network redundance
- news-room
- natural screening
- navigational assistance
- navigational information
- negative balance
- negative edge
- negative justification
- negative magnetostriction
- negative source
- neighbor gate
- neon sign
- nesting storage
- net yield
- network cluster
- network planning
- network recall
- network supervisor
- network system
- network user
- networking
- neutral transmission
- neutralizing circuit
- nickel-cadmium
- night service
- Nixie tube
- NMOS logic
- noise band
- noise bandwidth
- noise blanker
- noise blanking
- noise burst
- noise density
- noise distribution
- noise immunity
- noise masking
- noise objective
- noise slot
- noise voltage
- noiseless
- nominal width
- nested interval
- nesting loop
- netiquette
- network delay
- network identifier
- network operator
- network station
- network transformation
- neutral points
- NMOS chip
- NMOS component
- non-linearity
- non-parameter
- nonconformance
- noninverting buffer
- nonlinear filtering
- nonmagnetic
- nonreciprocal circuit
- nodal period
- nodal regression
- nodal set
- nodding mirror
- nodding programmer
- noise amplifier
- noise filter
- noise level