| Acronym | Meaning |
 | DTO | Disruptive Technology Office (was ARDA) |
| YTD | Year-To-Date |
| PG | Petagram |
| PASR | Personnel Accounting And Strength Reporting |
| AT | Anti-Tank -Ashmore And Cartier Islands (FIPS 10-4 Territory Code) - Austria (ISO 3166 Digram) -Advanced Technology (IBM Personal Computer/AT) |
| MEMS | Microelectromechanical System |
| OSS | Ossetic Language (ISO 639-2 Code) |
| PAKISTAN | Punjab |
| LANL | Los Alamos National Laboratory |
| RN | Royal Navy |
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