| Quadratmeter | square meter square metre |
| Quadratmeile | square mile |
| Quadrocopter | quadcopter |
| Quadrokopter | quadcopter |
| Quadrupeder | quadruped |
| Quadratdezimeter | square decimetre |
| Quadratkilometer | square kilometre |
| Quadratur | quadrature |
| Aräometer | areometer |
| Parameter | parameter |
| Quadratfuß | square foot |
| Quadratzentimeter | square centimeter |
| Quadrieren | quadrature |
| quadrieren | square |
| Quadrupede | quadruped |
| quartieren | quarter |
| Quadrant | quadrant |
| Quadrat- | square |
| Quadrat | square |
| Quadratestadt | City of Squares |