| automorph | automorphic idiomorphic |
| Allomorph | allomorph |
| Autograph | autograph |
| Autokorso | car parade motorcade parade of cars procession of cars |
| Automarke | car brand make of car |
| Automarkt | car mart |
| Automobil | automobile car auto motorcar |
| automobil | automotive |
| autotroph | autotroph |
| holomorph | holomorphic |
| isomorph | isomorphic |
| monomorph | monomorphic |
| zygomorph | zygomorphic |
| amorph | amorphous |
| anamorph | anamorphic |
| Autobombe | car bomb |
| Autocar | bus |
| Autochrom | autochrome |
| Autodrom | motor-racing circuit dodgems track bumper car dodgem |
| Autoerotik | autoerotism |