sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Illinois Secretary of State | **** |
| Irish Script on Screen | **** |
| International Symposium on Organosilicon | *** |
| International Symposium on the Ordovician System | *** |
| Internet Scale Operating System | *** |
| Integrated Software on Silicon | *** |
| International Society for Organ Sharing | *** |
| International Symposium on Optical Storage | *** |
| Integrated School of Ocean Sciences | *** |
| International School of Soccer | *** |
| In Search of Sustainability | *** |
| Integrated Space Operations Summit | *** |
| International Study of Schizophrenia | ** |
| Invitation to Submit Outline Solutions | ** |
| Information Security and Operating Systems | ** |
| In School Off School | ** |
| Institute for the Study of Slavery | ** |
| Irish Social Omnibus Survey | ** |
| International Symposium on Optimization and Statistics | ** |
| In Service Operational Support | ** |
| Information Systems Organisation and Society | ** |
| International Society of Occupational Scientists | ** |
| Internationaler Studenten Online Service | ** |
| iris stenzel online service | ** |
| Integrated Surface Observing System | ** |
| Information Systems Operations Service | * |
| Integrated Structural Optimization System | * |
| Intelligent Shell of SNMP | * |
| International Student Online Services | * |
| International Student Organisation of Stellenbosch | * |
| International Subcommission on Ordovician Stratigraphy | * |
| In the Shadow of Stars | * |
| Intelligence System of Systems | * |
| Interferometric Stellar Oscillation Spectrometer | * |
| Independent Seminar on the Open Society | * |
| Information System for Otter Surveys | * |
| Integrated Surface Observation System | * |
| Interdisciplinary Southern Ocean Science | * |
| Internet School for Orthodox Studies | * |
| Intensive Support Outreach Service | * |
| International Symposium on Organosilicone | * |
| Interpersonal Sexual Objectification Scale | * |