peig - pier
- peignoir
- pen
- pen hangar
- penetrated macadam
- penetration
- penetration asphalt
- penetration macadam
- penetration method
- penning
- Pentadome
- pentagonal hangar
- penthouse
- per cent compaction
- per cent of grade
- percentage elongation
- percentage imperviousness of area
- percentage of grade
- percentage of reinforcement
- perched water table
- percussion borer
- percussion boring
- percussion drilling
- perennial rye grass
- perennially-frozen ground
- perfect frame
- perforated pipe
- perforated steel plate
- peri-track
- perimeter defense of airfield
- perimeter planting
- perimeter taxilane
- perimeter track
- period of time of nonuse
- peripheral taxiway
- peripheral velocity
- permafrost
- permafrost area
- permafrost island
- permafrost region
- permafrost stratum
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