| Autotoxin | autotoxin |
| Autotomie | autotomy |
| Zytotoxin | cytotoxin |
| Autoerotik | autoerotism |
| Automixis | automixis |
| Automobil | automobile car auto motorcar |
| automobil | automotive |
| Autonomie | autonomy |
| Autorin | author writer |
| Autotypie | autotypy |
| Neurotoxin | neurotoxin |
| Mykotoxin | mycotoxin |
| Anatoxin | anatoxin |
| Aflatoxin | aflatoxin |
| Autistin | autist |
| Autobahn | motorway freeway highway interstate highway |
| Autobombe | car bomb |
| Autodiebin | car thief |
| Autofokus | autofocus |
| Autogamie | autogamy |