| Acronym | Meaning |
 | AFIS | Automated Fingerprint Identification System - American Forces Information Service |
| OD | Old Dragon - Ordnance Datum (nautical Charts) -Overdose |
| AJD | Astronomical Julian Day |
| SURTASS | Surveillance Towed Array Sensor System |
| DZ | Algeria (ISO 3166 Digram) - Drizzle (METAR Code) -Drop Zone |
| RCT | Randomized Controlled Trial - Robotically Controlled Telescope |
| SGD | Singapore Dollar (ISO 4217 Currency Code) |
| JUGFET | JUnction Gate Field-Effect Transistor |
| SX | Sonic X |
| SMIL | Sadomasochisterne I Landet (Danish SM Organisation) |
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