| Acronym | Definition |
|---|
| PSSN➣Pre-Sidedress Soil Nitrate |
| PSSN➣Portage Senior Service Network (Ohio) |
| PSSN➣Personnel Specialist Seaman (USN Rating) |
| PSSN➣Pocket-Sized Spiral Notebook |
| PSSN➣Plasma Science Society of Nepal |
| PSSN➣Penn State Sports Network (radio) |
| PSSN➣Power Section Serial Number (turboprop aircraft engine) |