Glossary

A cheese room, in medieval architecture.

An electric discharge characterized by the production of light, high cathodecurrent densities, and a low voltage drop at the cathode.

An arch, usually very massive, carried across a wide space, to support a groined vault or to stiffen a barrel

The wall arch or wall rib, or the corresponding rib coming next to the arcade between nave and aisle, or

A groove or bevel formed in metal as a result of arc cutting.