pan - pert
- pan conveyor
- pan furnace
- pan head rivet
- pan pelletizer
- panel heating
- pantograph
- pantograph collector
- pantometer
- paper
- paper cutter
- paper machine
- parabola
- parabolic interpolation
- parabolic reflector
- paraboloid of revolution
- parabrake
- parachute
- parachute brake
- paraffin
- paraffin oil engine
- paraffine crude oil
- parallax
- parallel
- parallel connection
- parallel crank mechanism
- parallel flow
- parallel flow heat exchanger
- parallel force system
- parallel key
- parallel lines
- parallel motion
- parallel operation
- parallel reamer
- parallel running
- parallel shaft reducer
- parallel vice
- parallelepiped
- parallelism
- parallelogram
- parallelogram of forces
