| Propan | propane |
| Propanol | propanol |
| Propanon | acetone |
| Propfan | propfan |
| Propin | propyne |
| Propen | propene |
| profan | mundane carnal profane secular |
| Proband | experimentee |
| Prolin | proline |
| Propst | provost |
| Prosa | prose |
| Proton | proton |
| probat | proven appropriate suitable |
| proben | rehearse |
| proper | proper |
| Tropen | tropics |
| Popanz | bragger |
| Probe- | tentative |
| probe- | shakedown |
| Prof | professor |