Cavity

Cavity ( cavum Latin " cave ", cf concave " inwardly curved " ) may refer to:

In different technical languages generally a cavity
Dental: holes in the tooth caused by tooth decay, cavity classes see
Negative form in the reshaping processing, see die
During casting cavities, nests, see mold cavity #
Cavity (chemistry), the interior of molecules
In physics and in particular in the high-frequency engineering a cavity resonator