sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Institute for Social and Policy Studies | **** |
| International School of Port of Spain | **** |
| Information Society Project Switzerland | *** |
| International Society for the Psychological | *** |
| Institution for Social and Policy Studies | *** |
| Internet Service Provider Security | *** |
| International Symposium on Physical Sciences | *** |
| Indian Society for Probability and Statistics | *** |
| International Studies in the Philosophy of Science | *** |
| International Society of Pituitary Surgeons | *** |
| International Symposium on Performance Science | *** |
| International Student Programs Services | *** |
| Indo Swiss Project Sikkim | *** |
| International Ship Port Security | *** |
| Illinois State Poetry Society | *** |
| Information Systems Planning and Support | *** |
| Institute of Social Protection and Solidarity | *** |
| Implementation Status and Plans | *** |
| International Shipping and Port Security | *** |
| Ionescu-Shiley Pericardial Standard | ** |
| International Symposium for Personal Spaceflight | ** |
| inflammation-sensitive plasma proteins | ** |
| International Shipments Processing System | ** |
| International Subcommission on Paleogene Stratigraphy | ** |
| International Standards for Phytosanitary | ** |
| International Symposium for the Psychotherapy of Schizophrenia | ** |
| International Society of Psychoneuroendocrinology | ** |
| Institutional Solar PV Systems | ** |
| International Society for Paracelsus Studies | ** |
| Instruction Set Processor Specifications | * |
| International Shogi Popularization Society | * |
| Internet Signaling Protocol Suite | * |
| Intense Slow Positron Source | * |
| Institute for the Study of Performance and Spirituality | * |
| In Space Propulsion Stage | * |
| Information System Production Systems | * |
| Indian Summer Pool and Spa | * |
| Illinois State Plane System | * |
| Internet Solution Provider Stuttgart | * |
| Irish Smashing Pumpkins Site | * |