| Atompilz | mushroom cloud |
| Atopie | atopy |
| Atommine | atomic demoliton munition |
| Atommüll | nuclear waste radioactive waste |
| Baumpilz | tree fungus |
| Mätopie | dystopia |
| atonal | atonal |
| Atoll | atoll |
| Atom | atom |
| Atomhülle | atomic shell electron shell |
| Atomkern | atomic nucleus atomic core nucleus |
| Atomkrieg | nuclear war |
| Atommeiler | nuclear reactor |
| Atomuhr | atomic clock |
| Atomzeit | atomic time |
| Atonie | atony atonicity flaccidity lack of tension lack of tone relaxation |
| atomar | atomic |
| Ptomain | ptomaine |
| -tomie | -tomy |
| Automobil | automobile car auto motorcar |
| automobil | automotive |