As a Noun: 1. A form of energy which is transmitted through wires that is used for heating and lighting, and to provide power for machines in houses and factories. English = electricity, power. As a Verb or Adjective: 1. Of various devices and machines, to depend on electricity as a source of power. English = (be) electric, (be) electrical. 2. Of a device, to have transistors, silicon chips, or valves which control and change the electric current passing through it. English = (be) electronic.