| Peritonitis | peritonitis |
| Peritoneum | peritoneum |
| Keratitis | keratitis |
| Parodontitis | periodontitis pyorrhea |
| Periegesis | periegesis |
| Periost | periosteum |
| Personismus | situationism |
| Periodikum | periodical |
| Peripetie | peripeteia |
| Peristaltik | peristalsis |
| Perzentil | percentile |
| perimortal | perimortal perimortem |
| perinatal | perinatal |
| periodisch | periodic |
| perniziös | pernicious |
| Enteritis | enteritis |
| Praeteritio | apophasis |
| Meritokratie | meritocracy |
| Seriosität | seriousness respectability |
| Arthritis | arthritis |