| Osteoklast | osteoclast |
| Orthoklas | orthoclase |
| Osterlamm | Paschal Lamb |
| Osteologe | osteologist |
| Osterfest | Easter |
| Osterhase | Easter Bunny |
| Osteroktav | Octave of Easter |
| Ikonoklast | iconoclast |
| Zytoblast | cytoblast |
| Strommast | pylon |
| Apostelamt | apostleship |
| Apostolat | apostolate |
| Ostasiat | East Asian |
| Osteogenese | osteogenesis |
| Osteologin | osteologist |
| osteo- | osteo- |
| Kostenart | cost element |
| Osteologie | osteology |
| Osteopenie | osteopenia |
| Osteoporose | osteoporosis |