| Pyroskop | pyroscope |
| Gyroskop | gyroscope |
| hygroskop | hygroscopic |
| Horoskop | horoscope |
| Pedoskop | pedoscope |
| Periskop | periscope |
| Pyrop | pyrope |
| Pyrotol | pyrotol |
| Laparoskop | laparoscope |
| Mikroskop | microscope |
| Endoskop | endoscope |
| Demoskop | pollster public opinion researcher |
| Koloskop | colonoscope |
| Mutoskop | mutoscope |
| Otoskop | otoscope |
| Zystoskop | cystoscope |
| pro Kopf | per capita |
| Pyrochlor | pyrochlore |
| Pyrrol | pyrrole |
| Pyrolyse | pyrolysis |