| Acronym | Definition |
|---|
| PSSO➣Pass the Slipped Stitch Over (the knit stitch) |
| PSSO➣Police Skills and Standards Organisation (UK) |
| PSSO➣Pale Sulfonated Shale Oil (medical treatment) |
| PSSO➣Property Seizure and Sale Order (Australia) |
| PSSO➣Purchasing, Safety and Security Office (National University of Singapore; Kent Ridge, Singapore) |
| PSSO➣Pain Syndrome of Spinal Origin (biomedicine) |