(physics) The study and use of electrical devices that operate by controlling the flow of electrons or other electrically charged particles or by converting the flow of charged particles to or from other forms of energy.

A motor that converts electrical energy into kinetic energy.

(chemistry) Any one of the simplest chemical substances that cannot be decomposed in a chemical reaction. Chemical elements consist of atoms which have the same number of protons.

An electoral register.

(Britain) A list of all those people who are registered to vote in a particular locality

a particulate collection device that removes particles from a flowing gas with electric forces

A special election held to fill a political office that has become vacant between general elections.

(computing) The tendency of programmers to disproportionately emphasize elegance in software at the expense of other requirements such as functionality, shipping schedule, and usability.

A guitar which requires electronic amplification to produce sufficient sound.

(chemistry, physics) the potential difference of a half-reaction which occurs across a reversible cell made up of any electrode and a standard hydrogen electrode