portage - principal distance
- portage
- portal
- portal bracing
- portal column
- portal frame
- portal gantry
- portal structure
- portal strut
- porter
- portico
- porting
- portion
- portioning
- portioning device
- portland cement
- poryness
- position
- position code
- position control servomechanism
- position data
- position feedback
- position finding
- position fixing
- position indicator
- position line
- position modulation
- position radar
- position sampler
- positional adjustment
- positional notation
- positional stability
- positioner
- positioning
- positioning device
- positioning element
- positioning numerical control
- positioning power unit
- positioning screw
- positive
- positive allowance