- Parallel Length
- Peak Max/Min
- Peel Extension
- Peel Factor
- Peel Length
- Peel Resistance
- Peel Strength
- Physical Measurement
- Piezoelectric
- Plastic
- Plastic Deformation
- Plastic Strain Ratio
- Plasticity
- Plasticity Number
- Poissons Ratio
- Precycling
- Preload
- Pressure Transducer
- Prompt Workspace
- Prompted Test
- Proof Stress
- Proportional Limit