| Acronym | Meaning |
 | HEOSS | High Earth Orbit Space Surveillance |
| SD | Sheriff's Department - Smoke/Decontamination-South Dakota (postal Symbol) - Sudan (ISO 3166 Digram) |
| FLAC | Free Lossless Audio Codec. |
| SWP | Special Working Party (swipp) - Systematic Westing Plan (a Plan Of Periodic Westing Of Shares Or Mutual Funds Worth A Fixed Amount Of Money) - Skill With Prizes (UK Pub Quiz Machines - Quality Titles Include: Pub Quiz |
| 2G | Second |
| VGB | British Virgin Islands (ISO 3166 Trigram) |
| SMR | San Marino (ISO 3166 Trigram) |
| BCD | Binary-Coded Decimal |
| HAZMAT | Hazardous Materials |
| TB | Tuberculosis |
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