| Apothecium | apothecium |
| Apotheke | pharmacy drugstore chemist's chemist's shop |
| Apotheker | pharmacist druggist |
| Apothema | apothem |
| Apotheose | apotheosis |
| anotherm | anothermal |
| Ruthenium | ruthenium |
| Aptium | Aptian |
| Apophis | Apophis |
| Apophänie | apophenia |
| Apoplexia | apoplexy |
| Apoplexie | apoplexy |
| Apostelin | apostle |
| Apogäum | apogee |
| Apoleis | apoleis |
| Aporetik | aporetic |
| Apothekerin | druggist |
| Mesotheliom | mesothelioma |
| isotherm | isothermic |
| Othering | othering otherization |