sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Senter for Internasjonalt Universitetssamarbeid | **** |
| symbiosis international university | **** |
| Service Improvement Unit | **** |
| System Information Update | **** |
| St Ignatius University | **** |
| Suomen Invalidien Urheiluliitto | **** |
| Strategic Intelligence Unit | **** |
| Special Investigation Units | **** |
| Souther Illinois University | *** |
| Special Investigating Unit | *** |
| Southern Illinois University (Carbondale, IL) | *** |
| Students International Union | *** |
| St Istvan University | *** |
| Signaling Interface Unit | *** |
| Significant Industrial Users | *** |
| Shelf Interface Unit | *** |
| Segments of Independent Utility | *** |
| Sylhet International University | *** |
| Sylvan International Universities | *** |
| special investigative units | *** |
| Sterrenkundig Instituut Utrecht | *** |
| Sensor Interface Units | *** |
| Society of Urology | *** |
| Stadium and Upgrade | *** |
| Sports Intelligence Unit | *** |
| Sterrekundig Instituut Utrecht | *** |
| Spacecraft Interface Unit | *** |
| Seiko Instruments USA | *** |
| Stimulus Isolation Unit | *** |
| System Industrial Users | *** |
| Southern Illinois Univeristy | *** |
| Smart Internet Usage | *** |
| Systeme International d'Unites | ** |
| self instructional unit | ** |
| Spinal Injuries Unit | ** |
| Standard Independent Unit | ** |
| standardized integral uptake | ** |
| Signals Intelligence Unit | ** |
| Sensor Interface Unit | ** |
| Stimulus Isolation Units | ** |
| Stress incontinence of urine | ** |
| Special Immunology Unit | ** |
| Sections of Independent Utility | ** |
| Server Interface Unit | ** |
| Serving in Unsilence | ** |
| Society of International Urology | ** |
| Section of Independent Utility | ** |
| Signalling Interface Unit | ** |
| Secure Interface Unit | ** |
| Special Interest Umbrella | ** |
| Scripture in Use | ** |
| Services Industrial Users | ** |
| Scientific Identification Unit | ** |
| Subscriber Interface Unit | ** |
| System Interface Units | ** |
| Station Interface Unit | ** |
| Sweers Islands Unveiled | ** |
| Signaling Interface Units | ** |
| Special Incident Unit | ** |
| Satellite Interface Unit | * |
| Signal Interface Unit | * |
| Salomon Idler Univiertel | * |
| Significant Indirect User | * |
| Software Inventory Utility | * |
| Support to Include | * |
| Soil Investigation Unit | * |
| Storm Interventions Unit | * |
| Suspended from Issue and Use | * |
| Sound Interface Unit | * |
| Statewide Investigative Unit | * |
| Sadistic Intent the Unite | * |
| Shanghai International United | * |
| SLQ-32 Interface Unit | * |
| Surface Interface Units | * |
| suspended for issue or use | * |