| Acetaldehyd | acetaldehyde |
| Acrylaldehyd | acrolein propenal |
| Aldehyd | aldehyde |
| Benzaldehyd | benzaldehyde |
| Formaldehyd | formaldehyde |
| Acetamid | acetamide |
| Acetal | acetal |
| Acetanilid | acetanilide |
| Acetylen | acetylene |
| Glutaraldehyd | glutaraldehyde |
| Acenaphthen | acenaphthene |
| Acetanhydrid | acetic anhydride |
| Acephalie | acephaly |
| Acetat | acetate |
| Acetyl | acetyl |
| Acetylierung | acetylation |
| Cetanzahl | cetane number |
| Ketalachs | chum salmon |
| betäubend | anesthetic |
| Aretalogie | aretalogy |