| Periastron | periastron |
| Plastron | ascot tie |
| Periost | periosteum |
| Periphyton | periphyton |
| Perserin | Persian |
| Operation | surgery operation |
| Perfektion | perfection |
| Pergamon | Pergamum |
| Periskop | periscope |
| Perkussion | percussion |
| Perron | platform |
| Person | person |
| Persuasion | persuasion |
| Peruanerin | Peruvian |
| Perzeption | perception |
| Uperisation | uperisation |
| Derivation | derivation |
| Geriaterin | geriatrician |
| Geriatrie | geriatrics |
| Pariserin | Parisian |