| Abbreviation | Definition |
|---|---|
| PSK | Parallel Simulation Kernel |
| PSL | Permanant Seat License |
| PSM | Persistent Stored Module |
| PSMN | Public Social Messaging Network |
| PSN | Package Sequence Number |
| PSN | Packet Switch Node |
| PSPDN | Packet-Switched Public Data Network |
| PST | Please Send Tell |
| PST | Priority Search Tree |
| PSTM | Pre-Stack Time Migration |
| PSTN | Public Switched Telephone Network |
| PT | Point and Talk |
| PT | Protocol Translation |
| PTA | PPP (Pont-to-Point Protocol) Termination Aggregation |
| PTCM | Power Tower Current Monitor |
| PTM | Port and Terminal Management |
| PTN | Pull- Thru Network |
| PTP | Picture The Possibilities |
| PTP | Picture Transfer Protocol |
| PTP | Point-To-Point |