| Acronym | Definition |
|---|
| IPSS➣National Institute of Population and Social Security Research (Japan) |
| IPSS➣International Prostate Symptom Score |
| IPSS➣International Prognostic Scoring System |
| IPSS➣Instituição Particular de Solidariedade Social (Portugese: Private Social Solidarity Institution) |
| IPSS➣International Professional Service Semester (Monterey Institute of International Studies; Monterey, CA) |
| IPSS➣Inferior Petrosal Sinus Sampling |
| IPSS➣International Pilot Study of Schizophrenia |
| IPSS➣Image Processing Subsystem |
| IPSS➣Initial Preplanned Supply Support |
| IPSS➣International Packet Switching System (ITU-T) |
| IPSS➣Integrated Patent Search System |
| IPSS➣In-Plane Shear Strength |
| IPSS➣Internet Protocol Security Services (Sprint) |
| IPSS➣Internet Protocol Service Switch (Spring Tides) |
| IPSS➣Improved Pesticide Spray System |