| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Penobscot Indians | No definition provided | Christopher Rauch | 2023.12.01 |
| Penobsquisite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Penology | No definition provided | Christopher Rauch | 2023.12.01 |
| Penroseite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Penrose limit | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Penrose limit | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Penrose process | A hypothetical means of extracting energy from a rotating black hole. If a particle spirals into the ergosphere of a black hole in a direction counter to the rotation of the black hole, and if the par ticle then breaks up into two fragments inside the ergosphere, one of the fragments can escape with energy greater than the energy of the original particle. | Ryan McGranaghan | 2023.04.16 |
| Pens | No definition provided | Christopher Rauch | 2023.12.01 |
| Pensacola (Ship) | No definition provided | Christopher Rauch | 2023.12.01 |
| Pension appropriation bills (U.S.) | No definition provided | Christopher Rauch | 2023.12.01 |
| Pensions | No definition provided | Christopher Rauch | 2023.12.01 |
| Pensions--Bibl | No definition provided | Christopher Rauch | 2023.12.01 |
| Pensions, Medical examinations for | No definition provided | Christopher Rauch | 2023.12.01 |
| Pensions, Military | No definition provided | Christopher Rauch | 2023.12.01 |
| Pensions, Military--U.S. | No definition provided | Christopher Rauch | 2023.12.01 |
| Penstocks | No definition provided | Christopher Rauch | 2023.12.01 |
| Pentacardioid | No definition provided | Christopher Rauch | 2023.12.01 |
| pentad | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Pentagon | No definition provided | Christopher Rauch | 2023.12.01 |
| Pentagonite | No definition provided | Ryan McGranaghan | 2023.04.16 |