| Acronym | Meaning |
 | BOC | British Orthodontic Society - British Oxygen Company |
| PDF | Panama[nian] Defense Forces (abolished 1990) - Portable Document Format - Principal Direction Of Fire |
| GMI | Generic Model Interface - Geometry Model Instance |
| IATA | International Air Transport Association |
| XBA | European Composite Unit (EURCO; Bonds Market Unit) (ISO 4217 Currency Code) |
| FNA | Functional Needs Analysis |
| OPI | Office Of Primary Interest - Open Prepress Interface |
| PIREPS | Pilot Reports |
| BOS | Bosnian Language (ISO 639-2 Code) |
| KG | Kyrgyzstan (FIPS 10-4 Country Code; ISO 3166 Digram) |
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