| atavism | Atavismus |
| atavistic | atavistisch |
| atavistic complex | atavistischer Komplex |
| ataxia | Ataxie |
| ataxia of gait | Gangataxie |
| Ataxia telangiectasia | Louis-Bar-Syndrom |
| ataxia teleangiectasia | Ataxia teleangiectasia |
| ataxia-telangiectasia | Ataxia teleangiectasia |
| ataxia-telangiectasia syndrome | progressive zerebelläre Ataxie |
| ataxia-teleangiectasia | Ataxia teleangiectasia |
| ataxia-teleangiectasia syndrome | Ataxia teleangiectasia |
| ataxias | Ataxien |
| ataxic | ataktisch |
| ataxic breathing | ataktisches Atmen |
| ataxic nystagmus | ataktischer Nystagmus |
| ataxic respiration | ataktische Atmung |
| ataxite | Ataxit |
| ataxites | Ataxite |
| Ataxy | Ataxie |
| Atayal | Atayal |
| Atayal people | Atayal |
| atazanavir | Atazanavir |
| ATB | ATB |
| Atbarah | Atbara |
| Atbarah River | Atbara |
| Atbash | Atbash |
| ATC | ATC |
| ATC code A | ATC |
| ATC code B | ATC |
| ATC code C | ATC |
| ATC code D | ATC |
| ATC code G | ATC |
| ATC code H | ATC |
| ATC code J | ATC |
| ATC code L | ATC |
| ATC code M | ATC |
| ATC code N | ATC |
| ATC code P | ATC |
| ATC code R | ATC |
| ATC code S | ATC |
| ATC code V | ATC |
| Atchison | Atchison |
| Atchison County | Atchison County |
| ATCO's strike | Floglotsenstreik |
| ATD | asynchrone Multiplextechnik |
| ATE | Prüfautomat |
| ate of inflow | Wasserzufluss |
| ate up | aß auf |
| atectonic | atektonisch |
| Atef Ebeid | Atif Abaid |
| Atef Sedki | Atif Muhammad Nagib Sidqi |
| atelectasis | Lungenatelektase |
| atelectatic | atelektatisch |
| atelestite | Atelestit |
| Atelidae | Klammerschwanzaffen |
| atelier | Künstlerwerkstatt |
| ateliers | Künstlerwerkstätten |
| Ateliers de Construction Aéronautique de Zeebruges | ACAZ |
| Atelinae | Klammerschwanzaffen |
| atellite | Prüfautomat |
| Atelopus | Stummelfußfrösche |
| atelosteogenesis | Atelosteogenesis |
| Atemi | Atemi |
| Aten | Aton |
| Atenolol | Atenolol |
| atephobia | Atephobie |
| Aterciopelados | Los Aterciopelados |
| Aterian | Atérien |
| Aterno | Pescara |
| ATEX directive | ATEX |
| Ath | Ath |
| Athabasca | Athabasca |
| Athabasca Oil Sands | Athabasca-Ölsande |
| Athabasca River | Athabasca River |
| Athabaskan languages | Athapaskische Sprachen |
| Athalaric | Athalarich |
| Athalia | Athalia |
| Athaliah | Atalja |
| Athamania | Athamanien |
| Athamantis | Athamantis |
| Athamas | Athamas |
| Athame | Athame |
| Athanagild | Athanagild |
| Athanaric | Athanarich |
| Athanasia Tsoumeleka | Athanasia Tsoumeleka |
| Athanasian Creed | Athanasisches Glaubensbekenntnis |
| Athanasios Diakos | Athanasios Diakos |
| Athanasios Eftaxias | Athanasios Eftaxias |
| Athanasios Miaoulis | Athanasios Miaoulis |
| Athanasius | Athanasius |
| Athanasius Kircher | Athanasius Kircher |
| Atharvaveda | Atharvaveda |
| atheism | Atheismus |
| Atheism in Christianity | Atheismus im Christentum |
| atheist | Atheist |
| Atheist Alliance International | Atheist Alliance International |
| atheistic | atheistisch |
| atheistical | atheistische |
| atheistically | atheistisch |
| Athelstan of England | Æthelstan |
| Athena | Athene |
| Athenaeus | Athenaios |
| Athenagoras | Athenagoras |
| Athenagoras of Athens | Athenagoras von Athen |
| Athene | Athene |
| Athene Glacier | Athene-Gletscher |
| Athene noctua | Steinkauz |
| athene owls | Steinkäuze |
| Atheneum | Athenäum |
| Athenian | Athener |
| Athenian democracy | Attische Demokratie |
| Athenodoros Cananites | Athenodoros Kananites |
| Athenodorus of Byzantium | Athenodorus von Byzanz |
| Athens | Athen |
