| astratto | abstract |
| astrazione | abstraction |
| Astrea | Astrea |
| Astreo | Astraeus |
| Astrid di Svezia | Astrid of Sweden |
| Astrid Lindgren | Astrid Lindgren |
| Astrid Varnay | Astrid Varnay |
| astringente | astringent |
| astringere | tighten |
| astro | heavenly body |
| Astro Boy | Astro Boy |
| Astro del Ciel | Silent Night |
| Astroarcheologia | Astroarchaeology |
| Astrobiologia | Astrobiology |
| Astrodinamica | Astrodynamics |
| Astrofilia | Amateur astronomy |
| Astrofilo | Skygazing |
| astrofisica | astrophysics |
| Astrofisica delle alte energie | High energy astrophysics |
| Astrofisica molecolare | Molecular astrophysics |
| Astrofisica nucleare | Nuclear astrophysics |
| Astrofisica relativistica | Relativistic astrophysics |
| Astrofisica teorica | Theoretical astrophysics |
| Astrogeologia | Planetary geology |
| Astrografi | Astrographs |
| Astrolabi | Astrolabe |
| Astrolabi Danjon | Danjon astrolab |
| Astrolabi impersonali | Impersonal astrolab |
| Astrolabio | Astrolabe |
| Astrolite | Astrolite |
| astrologa | astrologer |
