- parametric amplification
- parametric analysis
- parametric laser
- parametric oscillation
- parametric oscillator
- parametric test
- panoramic receiver
- paraboloidal antenna
- parabonic antenna
- parachute flare
- parallel storage
- parallel synchronous
- parallel system
- parasitic
- parasitic aerial
- parasitic antenna
- parasitic array
- parasitic choke
- parasitic diode
- parasitic excitation
- parasitic suppressor
- parasitic transistor
- parity control
- parity error
- parity generator
- parity unit
- parked
- parked dish
- parking orbit
- part number
- partial carry
- partial error
- partial failure
- partial function
- partial reading
- particle environment
- particle motion
- particles concentration
- partitioned matrix
- partner
- party address
- party line
- pass through
- pass transistor
- passband
- passband attenuation
- passband response
- passband tuning
- passcode
- passivated transistor
- passive color
- passive component
- passive filtering
- passive measurements
- passive repeater
- passive satellite
- passive sensor
- passive station
- passive substrate
- patch
- patching board
- path attenuation
- path memory
- path panel
- path separation
- path terminals
- pattern function
- pattern generation
- pattern registration
- patterning
- pause control
- pause signal
- payload
- payload capability
- payment arrears
- Pawey stub
- payphone
- paytelevision network
- PC board
- PCM multiplexer
- PCM system
- peak indicator
- pecentible signals
- pay scale
- Payback period
- payments authorization
- payroll
- PBX switchboard
- PCM filter
- PCM format
- peak follower
- peak modulation
- pedestal
- pencil beam
- pension benefits
- percent sign
- percentile level
- perfect restitution
- perforation code
- performance