| Abbreviation | Definition |
|---|---|
| PCR | Of Each Hundred |
| pcs. | pieces |
| PCU | Passenger Car Units |
| PCU | Psi Chrono Unit |
| PCY | Per Calendar Year |
| PDOP | Positional Dilution Of Precision |
| PERF | Number of Perforations |
| PF | Pico Farad |
| pf | power factor |
| PFLOPS | Peta Floating-Point Operations Per Second |
| PG | Package |
| PG | PicoGram |
| PHT | Peak Hour Traffic |
| PHZ | Peta Hertz |
| PI | Pyramid Inch |
| PIB | Pebibyte |
| PIP | Percent Identity Plot |
| PIV | Peak Inverse Volts |
| PK | Peck |
| PLS | Pounds Live Seed |