| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Parkinsonite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| parkland | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Parks | No definition provided | Christopher Rauch | 2023.12.01 |
| Parliamentary law | No definition provided | Christopher Rauch | 2023.12.01 |
| Parliamentary practice | No definition provided | Christopher Rauch | 2023.12.01 |
| Parlor foot-ball | No definition provided | Christopher Rauch | 2023.12.01 |
| Parlor tennis | No definition provided | Christopher Rauch | 2023.12.01 |
| Parnauite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Parodies | No definition provided | Christopher Rauch | 2023.12.01 |
| Parody | No definition provided | Christopher Rauch | 2023.12.01 |
| Parole (of prisoners) | No definition provided | Christopher Rauch | 2023.12.01 |
| Parol evidence | No definition provided | Christopher Rauch | 2023.12.01 |
| Paroophoron | No definition provided | Christopher Rauch | 2023.12.01 |
| Parotid duct | No definition provided | Christopher Rauch | 2023.12.01 |
| Parotid gland | No definition provided | Christopher Rauch | 2023.12.01 |
| Parotid gland--Excision | No definition provided | Christopher Rauch | 2023.12.01 |
| Parotid gland--Tumors | No definition provided | Christopher Rauch | 2023.12.01 |
| Parovarium | No definition provided | Christopher Rauch | 2023.12.01 |
| Parrots | No definition provided | Christopher Rauch | 2023.12.01 |
| Parsec | A basic unit of astronomical distances, corresponding to a trigonometric parallax of one second of arc. In other words, it is the distance at which one astronomical unit (the mean radius of the Earth' s orbit) subtends an angle of 1 arcsecond. 1 pc = 3.2616 light-years = 206,265 astronomical units = 30.857 x 10^12 km. | Ryan McGranaghan | 2023.04.16 |