(geology) An element which is not a trace element in a given context, and which is present in significant quantity.

Electric energy delivered to a consumer from the public electricity network.

Alternative spelling of electroencephalography

(physics) The coupled interaction between matter and an electromagnetic field within a resonating structure

(physics) The phenomena associated with moving electric charges, and their interaction with electric and magnetic fields; the study of these phenomena.

(physics, chemistry) A reference electrode or half-cell consisting of mercury, mercurous chloride and potassium chloride; used in pH meters and voltmeters

(physics, chemistry) Alternative name for the standard hydrogen electrode; an electrode with a standard electrode potential of zero; used as a standard against which other electrodes are measured.

A device that measures the consumption of electricity, normally in terms of watt-hours

plural of elective share

(law) A proportion of a decedent's estate which the surviving spouse may claim, as a substitute for what they were left in the decedent's will.