A substance made up of atoms with the same atomic number; common examples are hydrogen, gold, and iron. Also known as chemical element.

A circuit or device performing some specific elementary data-processing function.

1. A part of an electron tube, semiconductor device, or antenna array that contributes directly to the electrical performance.

2. See <<component>>

Radiator, active or parasitic, that is a part of an antenna.

A brief, relatively homogeneous part of a work cycle that can be described and identified.

1. In an array such as a matrix or determinant, a quantity identified by the intersection of a given row or column.

2. In network topology, an edge.

3. The generatrix of a ruled surface at any one fixed position.