| Proletin | Philistine |
| Prolaktin | prolactin |
| Prophetin | prophet |
| Prolet | pleb |
| Prolin | proline |
| Protein | protein |
| Profilerin | profiler |
| Prolepse | prolepsis |
| Prolepsis | prolepsis |
| Propin | propyne |
| Protektion | patronage |
| Progerie | progeria |
| Projektil | projectile |
| Projektion | projection |
| Promotion | doctorate promotion promo |
| Propen | propene |
| Prothetik | prosthetics |
| Proton | proton |
| Proxemik | proxemics |
| proaktiv | proactive |