| Quadratum oblongum | oblong |
| Quadratmeile | square mile |
| Quadratum | quadrate bone |
| quadratförmig | square square-shaped |
| Quarzstaublunge | pneumonoultramicroscopicsilicovolcanoconiosis |
| Quadratkilometer | square kilometre |
| Quadratmeter | square meter square metre |
| Quadratmikrometer | square micrometer square micrometre |
| Quadratmillimeter | square millimeter square millimetre |
| Quadratsekunde | second |
| Quadratur | quadrature |
| Quadratwurzel | square root |
| Quadratzahl | square number |
| Quadrofonie | quadraphonic sound |
| Quarkonium | quarkonium |
| Narratologie | narratology |
| Dorsum linguae | dorsum |
| Oblongum | oblong |
| Quadratfuß | square foot |
| Quadratzentimeter | square centimeter |