| Acronym | Meaning |
 | PB | Lead (Latin Plumbum) |
| GULCR | Grupo De Usuarios De Linux De Costa Rica |
| SHAPE | Supreme Headquarters Allied Powers Europe |
| TE | Telugu Language (ISO 639-1 Code) |
| YO | Former Yugoslavia (NATO Country Code |
| ENVL | Envelope |
| HLA | High Level Architecture - Human Leukocyte Antigen |
| ARRF | Allied Rapid Reaction Force |
| AR | Argentina (FIPS 10-4 Country Code; ISO 3166 Digram) - Arkansas (postal Symbol) - Armour |
| MWOA | Mount Wilson Observatory Association |
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