- the capacity for vigorous activity; available power: I eat chocolate to get quick energy.
- an adequate or abundant amount of such power: I seem to have no energy these days.
- a feeling of tension caused or seeming to be caused by an excess of such power: to work off one's energies at tennis.
- an exertion of such power: She plays tennis with great energy.
- the habit of vigorous activity; vigor as a characteristic: Foreigners both admire and laugh at American energy.
- the ability to act, lead others, effect, etc., forcefully.
- forcefulness of expression: a writing style abounding with energy.
- the capacity to do work; the property of a system that diminishes when the system does work on any other system, by an amount equal to the work so done; potential energy. Symbol: E
- any source of usable power, as fossil fuel, electricity, or solar radiation.
- intensity or vitality of action or expression; forcefulness
- capacity or tendency for intense activity; vigour
- vigorous or intense action; exertion
- physics
- the capacity of a body or system to do work
- a measure of this capacity, expressed as the work that it does in changing to some specified reference state. It is measured in joules (SI units)
- a source of power
