| Acronym | Meaning |
 | LTL | Lithuanian Litas (ISO 4217 Currency Code) |
| USC | United States Code - University Of South Carolina - University Of Southern California |
| RWA | Rwanda (ISO 3166 Trigram) |
| UNAIDS | Joint United Nations Programme On HIV/AIDS |
| HMO | Health Management Organization |
| OHSS | Ovarian Hyperstimulation Syndrome |
| UPDM | Uganda People?s Democratic Movement - Unified Modeling Language Profile For DoDAF And MoDAF - Unit? De Psychiatrie Du D?veloppement Mental - Universal Pattern Decomposition Method - Unix Power Device Management - Unpressurized Docking Mast - Urban Planni |
| UAE | United Arab Emirates |
| RRN | Recurrence Rate Number |
| GNAS | Grand National Archery Society |
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