plan - pre-
- plan
- plan position indicator
- plan view
- plan-position-indicator radar
- planar coordinate system
- plane
- plane balance
- plane Earth
- plane of the nominal ILS glide path
- plane's tail
- plane-load charter
- planet
- planet flyby
- planetary aerocapture
- planetary aerocapture vehicle
- planetary boundary layer
- planetary clutch
- planetary gear
- planetary gearbox
- planetary gearing
- planetary reduction gear
- planetary spacecraft
- planned curriculum
- planned descent
- planned maintenance
- planned path
- planned preventive maintenance
- planning
- planning chart
- plant
- plaque
- plasma
- plasma coating
- plasma dynamics
- plasma jet
- plasma jet thruster
- plasma physics
- plasma propulsion
- plasma rocket
- plasma rocket engine
