| Ordinationsraum | surgery |
| Ordination | ordination |
| Oxidationszahl | oxidation number |
| Ordinariat | ordinariate |
| Koordination | coordination |
| Ordinarius | ordinary |
| Kombinationsfeld | combo box |
| Kombinationszange | combination pliers engineers pliers |
| Animationsfilm | animated cartoon |
| Gravitationskraft | gravitational force |
| Oxidationsflamme | oxidizing flame |
| Operationssaal | operating room theatre operating theater operating theatre surgery theater |
| Namensraum | namespace |
| Sanitätsraum | emergency room |
| Vorratsraum | garner |
| Koordinator | coordinator |
| Koordinatorin | coordinator |
| Koordinatensystem | coordinate system |
| Ordinalzahl | ordinal number |
| Ordinate | ordinate |