A supplemental food in bar form, containing cereals or other high-energy foods. / (video games) A bar indicating the proportion of a character's energy that still remains.

Energy taken from a source that is depleted by extraction (such as fossil fuels).

A source from which useful energy can be extracted or recovered either directly or by means of a conversion or transformation process (e.g. solid fuels, liquid fuels, solar energy, biomass, etc.)

A substance or phenomenon that can be used to produce mechanical work or heat or to operate chemical or physical processes (ISO 13600).

A domestic electricity meter

Energy in a form that can radiate, generally electromagnetic energy.

(physics) The energy possessed by an object because of its motion, equal (nonrelativistically) to one half the mass of the body times the square of its speed.

(physics) of an elementary particle, or the equivalent electromagnetic radiation, having an energy greater than a hundred thousand electron volts

The energy possessed by an object because of its position (in a gravitational or electric field), or its condition (as a stretched or compressed spring, as a chemical reactant, or by having rest mass).

(alternative medicine) The spiritual or etheric energy produced by an individual living being.