| Acronym | Meaning |
| BA | Barium |
| ITA | Italy (ISO 3166 Trigram) |
| ADS | Active Denial System - Astrophysics Data System - Attention Deficit Syndrome |
| MHWS | Mean High Water Springs (nautical Charts) |
| ALS | Amyotrophic Lateral Sclerosis - Automatic Landing System |
| HE | Hebrew Language (ISO 639-1 Code) |
| CHN | China (ISO 3166 Trigram) |
| NASA | National Aeronautics And Space Administration |
| SLB | Solomon Islands (ISO 3166 Trigram) |
| ARS | Agricultural Research Service -Argentine Peso (ISO 4217 Currency Code) |