| Peritoneum | peritoneum |
| Perineum | perineum |
| Perikope | pericope |
| Peritonitis | peritonitis |
| Periöken | Perioikoi |
| Persimone | persimmon |
| Perigäum | perigee |
| Periode | period tide |
| Periodikum | periodical |
| per annum | per annum |
| Meritum | merit |
| Puritaner | Puritan |
| Territorium | territory |
| Tritonus | tritone |
| Titonium | Tithonian |
| Bartonium | Bartonian |
| Tortonium | Tortonian |
| vertonen | set to music |
| Plutonium | plutonium |
| Protonym | protonym |