| Acronym | Meaning |
| INAS | International Near-Earth Asteroid Survey |
| TOA | Table Of Authorities - Total Obligation Authority (accounting) |
| USEC | United States Enrichment Corporation |
| GCSE | General Certificate Of Secondary Education (UK) |
| MMR | Measles |
| TSO | Tsonga Language (ISO 639-2 Code) |
| UNMIK | United Nations Interim Administration Mission In Kosovo |
| FDDI | Fibre Distributed Data Interface |
| DSS | Digitized Sky Survey - Discarding-Sabot Shell (ammunition) |
| XBA | European Composite Unit (EURCO; Bonds Market Unit) (ISO 4217 Currency Code) |