| atomar | atomic |
| atonal | atonal |
| Atom | atom |
| Atomuhr | atomic clock |
| Automat | vending machine |
| Stoma | stoma stomate ostomy |
| Aroma | aroma flavour taste |
| anomal | anomalous |
| Aramäer | Aramaean |
| Sathmar | Satu Mare |
| Atopie | atopy |
| subatomar | subatomic |
| Atoll | atoll |
| Atomkern | atomic nucleus atomic core nucleus |
| Atonie | atony atonicity flaccidity lack of tension lack of tone relaxation |
| Ptomain | ptomaine |
| -tomie | -tomy |
| Automarke | car brand make of car |
| Automarkt | car mart |
| Ottoman | ottoman |