sort by Rank | Alpha
| Possible Meanings | Rank |
| State Invasive Species Council | *** |
| Samsung India Software Center | *** |
| Sydney Indoor Sports Centre | *** |
| Safety Intelligence Systems Corporation | *** |
| sterile isotonic sodium chloride2 | ** |
| semistructured interview for seizure classification | ** |
| Sydney International Statistical Congress | ** |
| Southern Indiana Sports Center | ** |
| Samsung India Software Centre | ** |
| Sydney International Shooting Centre | ** |
| Structured Interview for Symptoms and Concerns | ** |
| Syracuse Indoor Sports Center | ** |
| Shepparton Italian Social Club | ** |
| Solomon Islands San Cristoval | ** |
| Specific Instruction Set Computer | ** |
| Standards Information Service of Canada | ** |
| Security Industry Standards Committee | ** |
| Science Information System Center | ** |
| Studies in Slavic Cultures | ** |
| Staff Infrastructure Steering Committee | * |
| State Information Security Committee | * |
| Software and Information Services Committee | * |
| Schedules Information Standards Committee | * |
| Science Information Systems Center | * |
| Support Information Service Center | * |
| Swedish Institute of Steel Construction | * |
| Single Instruction Set Computer | * |
| Satellite Information System Company | * |
| Satellite Information Systems Company | * |
| Southern Illinois Sand Company | * |
| Southwest Indiana Spencer County | * |
| Stewart Information Services Corner | * |