| Abbreviation | Definition |
|---|---|
| PSS | Personnel Support System |
| PSS | Pre-positioned Strategic Stocks |
| PSS | Projected Smoke System |
| PSSM | Physical Security and Stockpile Management |
| PSSP | Personnel Security and Surety Program |
| PST | Physical Screening Test |
| PST | Preliminary Service Testing |
| PST | Psychological Skills Training |
| P-STATIC | Precipitation Static |
| PSTIAC | avements and Soil Trafficability Information Analysis Center |
| PSTIAC | Pavements and Soil Trafficability Information Analysis Center |
| PSTN | Public Switched Telephone Network |
| PSU | Port Security Unit |
| PSU | Prescribing Support Unit |
| PSV | Preliminary Site Visit |
| PSV | Pseudosynthetic Video |
| PSY | Professional Staff Year |
| PSY | Professional Staff Years |
| PSY | Psychiatry |
| PSYOP | Psychological Operations |