| Protonenmasse | proton mass |
| Neutronenmasse | neutron mass |
| Sonnenmasse | solar mass |
| Elektronenmasse | electron mass |
| Trockenmaß | dry measure |
| Totenmaske | death-mask |
| Totenmesse | requiem |
| Prominente | star celebrity |
| Promenade | promenade |
| Prothese | prosthesis denture |
| Protogermanisch | Proto-Germanic |
| Protolyse | protolysis |
| Protonenblocker | proton-pump inhibitor |
| Protonendonator | proton donor |
| Protonentherapie | proton therapy |
| Protonym | protonym |
| Protoplasma | protoplasm |
| Protosprache | proto-language |
| Crotonsäure | crotonic acid |
| Rotbrasse | common pandora pandora |