sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Spare Parts Inventory System | *** |
| South Pacific Information Services | *** |
| Safety Priority Index System | *** |
| sum of pain intensity scores | ** |
| Second Philippine International School | ** |
| Serine proteinase inhibitory proteins | ** |
| Science Press Internet Services | ** |
| South Plains Iris Society | ** |
| sequences of pulse intervals | ** |
| Skin Picking Impact Scale | ** |
| Shared Preservation in Scotland | ** |
| Security and Protection Services | ** |
| Spacecraft Plasma Interaction System | ** |
| Service Packaging Instruction Sheets | * |
| Services Packaging Instruction Sheet | * |
| Sort Pattern Inquiry System | * |
| Signal Processing and Instrumentation Section | * |
| South Pacific Information Service | * |