| Abbreviation | Definition |
|---|---|
| PG | Prohabition Guidance |
| PG9 | Prohabition Guidance catergory 9 |
| PGD | Page Global Directory |
| PGD | Protein Geometry Database |
| PHD | Process Historian Database |
| PHD | Professional Help Desk |
| PHED | Pesticide Handler Exposure Database |
| PIB | Parameter Information Block |
| PID | Pathway Interaction Database |
| PID | Person Identification Database |
| PID | Property Identifier |
| PIDMS | Panorama Image Database Management Systems |
| PIF | Personel Information Format |
| PIIMS | Personal Interactive Information Management Site |
| PIL | Processing Information List |
| PILC | Performance Implications of Link Characteristics |
| PLD | Patrologia Latina Database |
| PLID | Protein ligand interaction database |
| PLOS | Public Library of Science |
| PLSD | Prospective Lynch Syndrome Database |