| Abgassystem | exhaust gas system exhaust system |
| Abwassersystem | sewage system sewerage wastewater system |
| Binärsystem | binary system |
| Oktalsystem | octal numeral system |
| Abgesandter | emissary |
| Abgasnorm | emission standard |
| abgießen | cast |
| Bagassose | bagassosis |
| Aasseite | flesh side left side |
| Ablassbrief | letter of indulgence |
| Ablassen | surcease jettisoning lowering |
| ablassen | surcease avoid give up discharge let out steem |
| Abwasser | wastewater waste water |
| Bassist | bass singer double bass player bassist bass guitarist bass player |
| Bassistin | bassist |
| abfassen | write |
| Atmungssystem | respiratory system |
| Glaubenssystem | belief system |
| Bezugssystem | frame of reference reference frame |
| Dateisystem | file system |