| Acronym | Meaning |
| RQ | Puerto Rico (FIPS 10-4 Territory Code) |
| HL | Hectolitre |
| EU | Europa Island (FIPS 10-4 Country Code) -European Union |
| AAP | Advanced Acquisition Plan - Allied Administrative Publication - American Academy Of Pediatrics |
| AVA | Avar Language (ISO 639-2 Code) |
| SOAP | Simple Object Access Protocol |
| PCN | Pitcairn Islands (ISO 3166 Trigram) |
| CDT | Commandant |
| BGN | U.S. Board On Geographic Names -Bulgarian Lev (ISO 4217 Currency Code) |
| CBR | Case-Based Reasoning |