| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Pleistocene period | No definition provided | Christopher Rauch | 2023.12.01 |
| Pleonaste | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ple-siosauria | No definition provided | Christopher Rauch | 2023.12.01 |
| Plesiosauria | No definition provided | Christopher Rauch | 2023.12.01 |
| Plessite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Plethora (Pathology) | No definition provided | Christopher Rauch | 2023.12.01 |
| Plethysmograph | No definition provided | Christopher Rauch | 2023.12.01 |
| Pleura | No definition provided | Christopher Rauch | 2023.12.01 |
| Pleura--Diseases | No definition provided | Christopher Rauch | 2023.12.01 |
| Pleurisy | No definition provided | Christopher Rauch | 2023.12.01 |
| Pleuropneumonia | No definition provided | Christopher Rauch | 2023.12.01 |
| Plevna--Siege, 1877 | No definition provided | Christopher Rauch | 2023.12.01 |
| Plevna--Siege, ISIJ | No definition provided | Christopher Rauch | 2023.12.01 |
| Plexus, Solar | No definition provided | Christopher Rauch | 2023.12.01 |
| Plica polonica | No definition provided | Christopher Rauch | 2023.12.01 |
| pliensbachian | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Plimerite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| plinian eruption | Plinian eruptions are characterized by paroxysmal ejection of large volume of ash and pumice as a well-defined eruption column or ‘jet;’ often precedes caldera collapse. The resulting tephra fallout c overs an area of more than 500 square kilometers. | Ryan McGranaghan | 2023.04.16 |
| Plinths | No definition provided | Christopher Rauch | 2023.12.01 |
| pliocene | No definition provided | Ryan McGranaghan | 2023.04.16 |