sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Single Use Diagnostic System | *** |
| Sustainable Urban Drainage Schemes | *** |
| Sudden Unexplained Death Syndrome | *** |
| Subjective Units of Disturbance | *** |
| Subjective Units of Disturbance Scale | *** |
| single-unit delivery system | ** |
| Sydney University Dramatic Society | ** |
| straight, unbranched, double septum septate | ** |
| Subjective Units of Discomfort Scale | ** |
| Sudden and unexplained death in sleep | ** |
| Sydney University Drama Society | ** |
| Student Union Development Symposium | ** |
| Soldiers Undertaking Disabled Scuba | ** |
| Sussex University Drama Society | ** |
| Seismic Unified Data System | ** |
| Shared Urban Data System | ** |
| Single Use Disposable Syringe | * |
| Scottish Underground Directory Service | * |
| Sudden Unexplained Death Study | * |
| Saskatoon Ultimate Disc Sport | * |
| Shelter and Urban Development Support | * |
| Subjective Units of Distress Score | * |
| Stanford Universal Drawing System | * |