| Acronym | Meaning |
 | ATSD | (U.S.) Assistant To The Secretary Of Defense |
| SDH | Synchronous Digital Hierarchy |
| MTBF | Mean Time Between Failures |
| KWD | Kuwaiti Dinar (ISO 4217 Currency Code) |
| OPSI | Overwhelming Post Splenectomy Infection - UK Office Of Public Sector Information |
| OTO | Ordo Templi Orientis (Latin |
| DEA | Drug Enforcement Agency |
| ACC | U.S. Air Combat Command - Air Component Commander - Altocumulus Castellanus - Atlantic Coast Conference - Automatic Climate Control - Area Control Center |
| CFL | Canadian Football League - Co-ordinated Fire Line |
| NUWC | U.S. Naval Undersea Warfare Center |
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