| Propin | propyne |
| Prolin | proline |
| Propan | propane |
| Propen | propene |
| Propfan | propfan |
| Profi | professional pro |
| Profil | profile |
| Profit | profit |
| Promi | celeb |
| Propst | provost |
| Prosit | toast |
| Protein | protein |
| Proton | proton |
| Provinz | province |
| proben | rehearse |
| profan | mundane carnal profane secular |
| proper | proper |
| Atropin | atropine |
| Tropen | tropics |
| Probe- | tentative |
| probe- | shakedown |