| Acronym | Meaning |
| IAEA | International Atomic Energy Agency |
| RFI | Ready For Inspection - Ready For Issue - Request For Information - Radio Frequency Interference |
| NATO | National Association Of Theatre Owners - North Atlantic Treaty Organisation |
| ABIN | Ag?ncia Brasileira De Intelig?ncia (Brazilian Intelligence Agency) |
| LWR | Laser Warning Receiver |
| SP | Security Police - Self-Propelled - Shore Patrol -Spain (FIPS 10-4 Country Code) -Start Point - Strong Point |
| MAVS | Mobile Artillery Vehicle System |
| SNP | Single Nucleotide Polymorphism |
| ACC | U.S. Air Combat Command - Air Component Commander - Altocumulus Castellanus - Atlantic Coast Conference - Automatic Climate Control - Area Control Center |
| PIPA | Program On International Policy Attitudes |