| Aqua destillata | distilled water |
| Destillat | distillate |
| Aquadest | distilled water |
| Aquatinta | aquatint |
| Abdestillation | fractional distillation |
| Abladestelle | tipple |
| Aquaristin | aquarist |
| Aquarell | watercolour watercolor |
| Aquarellist | watercolourist aquarellist watercolorist |
| Aquaristik | fishkeeping |
| Äquidistanz | equidistance |
| äquidistant | equidistant |
| Acqua alta | acqua alta |
| Quadrille | quadrille |
| Quadrillion | septillion |
| Quantität | quantity |
| Aq. dest. | distilled water |
| auf der Stelle | outright |
| Eau de Toilette | eau de toilette |
| Destille | distillery |