| petrolblau | teal |
| Petrologie | petrology |
| petrol | teal |
| Petrograd | Petrograd |
| Petroleum | kerosene paraffin |
| hellblau | light blue |
| Petrolether | petroleum ether |
| Petra | Peta Petra Petrina |
| Petroglyphe | petroglyph |
| Retroflex | retroflex |
| retroflex | retroflex |
| Metrologie | metrology |
| Metropole | metropolis |
| Metropolis | metropolis |
| Tretroller | kick scooter |
| betriebsam | industrious bustling busy |
| retrobulbär | retrobulbar |
| retrograd | retrograde |
| Bettrolle | bedroll |
| Patroklos | Patroclus |