| astounding | asombroso |
| astounds | desconcertado |
| Astove Island | Isla de Astove |
| astrachan | astracán |
| Astraea | Astrea |
| Astraeus | Astreo |
| astrakhan | astracán |
| Astrakhan Oblast | Óblast de Astracán |
| astral | astral |
| Astral projection | Proyección astral |
| Astrantia | Astrantia |
| Astraphobia | Astrafobia |
| Astrapia | Astrapia |
| astray | extraviado |
| Astrea | Astrea |
| Astrid Lindgren | Astrid Lindgren |
| Astrid Lindgren Memorial Award | Premio Memorial Astrid Lindgren |
| Astrid of Sweden | Astrid de Suecia |
| astride | a horcajadas |
| astringence | aspereza |
| astringences | aspereza |
| astringency | atranco |
| astringent | astringente |
| Astro Boy | Astroboy |
| Astroarchaeology | Astroarqueología |
| Astrobiology | Astrobiología |
| Astrocaryum aculeatum | Astrocaryum aculeatum |
| Astrocyte | Astrocito |
| astrodome | cupula |
| astrodomes | cupula |
| Astrodon | Astrodon |
| Astrodynamics | Astrodinámica |
| Astrographic catalog | Catálogo astrográfico |
| Astrolab | Astrolabio |
| Astrolabe | Astrolabio |
| astrologer | astrólogo |
| astrological | astrológico |
| Astrological age | Era astrológica |
| Astrological aspect | Aspecto gramatical |
| Astrological sign | Signo zodiacal |
| astrology | astrología |
| Astromech droid | Droide astromecánico |
| Astrometric instrument | Instrumento astrométrico |
| astrometry | astrometría |
| astronaut | astronauta |
| astronautics | astronáutica |
| astronomer | astrónomo |
| astronomic | astronómico |
| astronomical | astronómico |
| Astronomical constant | Constante astronómica |
| Astronomical instrument | Instrumento astronómico |
| Astronomical naming conventions | Convenciones sobre nomenclatura astronómica |
| Astronomical optics | Óptica astronómica |
| Astronomical research | Búsqueda astronómica |
| Astronomical satellite | Telescopio refractor |
| Astronomical seeing | Seeing |
| Astronomical spectroscopy | Espectroscopia astronómica |
| Astronomical symbols | Simbología astronómica |
| Astronomical techniques | Tecnica astronómica |
| Astronomical transit | Tránsito astronómico |
| astronomical unit | unidad astronómica |
| astronomically | astronómicamente |
