| Paroxytonon | paroxytone |
| Proparoxytonon | proparoxytone |
| Oxytonon | oxytone |
| Paronymon | paronym |
| Parthenon | Parthenon |
| Partition | partition |
| Paradoxon | paradox |
| Paroxysmus | paroxysm |
| Oxytonum | oxytone |
| oxyton | oxytone |
| Oxymoron | oxymoron |
| Oxytocin | oxytocin |
| Baryton | baritone |
| Polyptoton | polyptoton |
| Proton | proton |
| Protonym | protonym |
| Serotonin | serotonin |
| pro bono | pro bono |
| Propanon | acetone |
| Parasitologe | parasitologist |