In stonework, carpentry, and joinery: a face worked to convex spherical shape, presenting a curved outline in both plan and […]

An arch whose intrados takes the form of a segment of a circle.

Any type of device used to close and/or open an electrical circuit.

An electric device for opening and closing a circuit, designed to open the circuit automatically upon flow of a predetermined

1. A continuous electrical path, or a system of conductors, through which an electric current is intended to flow. 2.

A trowel having a concave or convex blade; used in plastering curved surfaces.