| Astrophyllit | astrophyllite |
| Astrophysik | astrophysics |
| Astraphobie | keraunophobia |
| Astrozyt | astrocyte |
| Astrophysiker | astrophysicist |
| Atrophie | atrophy |
| Autophilie | autophilia self-love |
| Xanthophyll | xanthophyll |
| Astralleib | astral body |
| Astronomin | astronomer |
| Astrophysikerin | astrophysicist |
| Astrobiologie | astrobiology |
| Astrodynamik | astrodynamics |
| Astrogeologie | astrogeology |
| Astrologe | astrologer astrologist |
| Astrologie | astrology |
| Astrologin | astrologer astrologist |
| Astronaut | astronaut |
| Astronautik | astronautics |
| Astronautin | female astronaut |