| Acronym | Meaning |
| PTAL | Public Transport Accessibility Level |
| NSA | U.S. National Security Agency - Naval Support Activity - No Strings Attached |
| N | Nano |
| STRATCOM | United States Strategic Command |
| FJ | Femtojoule |
| NAV | Navajo Language (ISO 639-2 Code) |
| SEM | Sensor Employment Manager |
| DHHS | (U.S.) Department Of Health And Human Services |
| POL | Petroleum, Oil, And Lubricant |
| DSPMS | D.s.p.m. Suivre (Latin |