| Osteochondrosis | osteochondrosis |
| Osteoporose | osteoporosis |
| Osttocharisch | Tocharian A |
| Mitochondrion | mitochondrion |
| hypochondrisch | hypochondriac |
| Hypochondrie | hypochondria hypochondriasis |
| Mitochondrium | mitochondrion |
| Chondritis | chondritis |
| Enchondrom | enchondrome |
| Osteogenese | osteogenesis |
| Osteologin | osteologist |
| Ostermond | April |
| Väterchen Frost | Father Frost |
| osterländisch | Osterlandish eastern |
| Osteologie | osteology |
| Osteopenie | osteopenia |
| Osteuropäerin | Eastern European |
| Schonkost | bland diet light diet |
| ostensiv | ostensive |
| stechend | biting |