| Autointoxikation | autointoxication |
| Authentifikation | authentication authentification |
| Intoxikation | intoxication |
| Autoinfektion | autoinfection |
| Autoxidation | autoxidation |
| Autofiktion | autofiction |
| Autodetermination | self-determination |
| Autokollimation | autocollimation |
| Autonomistin | autonomist |
| Autorisation | authorisation authorization |
| Fettoxidation | fat oxidation |
| Luftoxidation | air oxidation |
| Obnoxiation | debt bondage |
| Automation | automation |
| Autotoxin | autotoxin |
| Photoionisation | photoionization |
| Intonation | intonation |
| Photooxidation | photooxidation |
| Amplifikation | amplification |
| Chronifikation | chronification |