| Acronym | Meaning |
 | PCR | Polymerase Chain Reaction |
| IRSN | Institut De Radioprotection Et De S?ret? Nucl?aire (French |
| OSI | Office Of Strategic Influence - Ontario Swine Improvement - Open Source Initiative - Open Systems Interconnection |
| APEDS | AMSAA Performance Estimates Data System |
| CTSS | Compatible Time-Sharing System |
| KGB | Komitet Gosudarstvennoy Bezopasnosti (Russian Committee For State Security) (1954-1991) |
| GIS | Geographic Information System -Google Image Serach |
| RPA | Regional Plan Association |
| AEW | Airborne Early Warning - Airborne Electronic Warfare |
| JOA | Joint Operations Area |
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