| Altarraum | chancel presbytery |
| Altarm | oxbow lake |
| Altertum | antiquity |
| Alcarraza | alcarraza |
| Leerraum | white space |
| Kulturraum | cultural area |
| Alptraum | nightmare |
| Albtraum | nightmare bad dream |
| Klartraum | lucid dream |
| Altair | Altair |
| Altgrad | degree |
| Kaltanruf | cold call |
| alte Frau | old woman |
| alter Gaul | jade |
| altersgrau | hoary |
| Altar | altar |
| Altarbild | altarpiece |
| Altbau | old building |
| Hinterraum | snug |
| Hyperraum | hyperspace |