noun \i-ˌlek-ˈtri-sə-tē, ē-ˌ, -ˈtris-tē\

: a form of energy that is carried through wires and is used to operate machines, lights, etc.

: electric current or power

: a feeling of excitement or tension

plural elec·tric·i·ties

Full Definition of ELECTRICITY

a :  a fundamental form of energy observable in positive and negative forms that occurs naturally (as in lightning) or is produced (as in a generator) and that is expressed in terms of the movement and interaction of electrons
b :  electric current or power
:  a science that deals with the phenomena and laws of electricity
:  keen contagious excitement <could feel the electricity in the room>


  1. The electricity went off during the storm.
  2. an old building with no plumbing or electricity
  3. You could feel the electricity in the room.

First Known Use of ELECTRICITY


Other Electrical Engineering Terms

feedback, fuse, incandescent, noise, resonance


noun \i-ˌlek-ˈtris-ət-ē, -ˈtris-tē\   (Medical Dictionary)
plural elec·tric·i·ties

Medical Definition of ELECTRICITY

a : a fundamental entity of nature consisting of negative and positive kinds, observable in the attractions and repulsions of bodies electrified by friction and in natural phenomena (as lightning or the aurora borealis), and usually utilized in the form of electric currents b : electric current or power
: a science that deals with the phenomena and laws of electricity


noun    (Concise Encyclopedia)

Phenomenon associated with stationary or moving electric charges. The word comes from the Greek elektron (“amber”); the Greeks discovered that amber rubbed with fur attracted light objects such as feathers. Such effects due to stationary charges, or static electricity, were the first electrical phenomena to be studied. Not until the early 19th century were static electricity and electric current shown to be aspects of the same phenomenon. The discovery of the electron, which carries a charge designated as negative, showed that the various manifestations of electricity are the result of the accumulation or motion of numbers of electrons. The invention of the incandescent lightbulb (1879) and the construction of the first central power station (1881) by Thomas Alva Edison led to the rapid introduction of electric power into factories and homes. See also James Clerk Maxwell.


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