| Pyrochlor | pyrochlore |
| Pyrotol | pyrotol |
| Pyrometer | pyrometer |
| Pyroskop | pyroscope |
| parochial | parochial |
| isochor | isochoric isochore isochorically |
| Sprachlos | tongue-tied |
| sprachlos | be lost for words voiceless aphasic speechless tongueless |
| Chlor | chlorine |
| Perchlorat | perchlorate |
| geruchlos | odorless unscented inodorous |
| ruchlos | heinous ruthless |
| Pyrolusit | pyrolusite |
| Pyrop | pyrope |
| Pyrophobie | pyrophobia |
| Pyrrhus- | Pyrrhic |
| Pyrrol | pyrrole |
| Pyrolyse | pyrolysis |
| Pyromane | pyromaniac |
| Pyromanie | pyromania |