en·er·gy


-noun
1. the capacity for vigorous activity; available power: I eat chocolate to get quick energy.
2. an adequate or abundant amount of such power: I seem to have no energy these days.
3. often, energies. a feeling of tension caused or seeming to be caused by an excess of such power: to work off one's energies at tennis.
4. an exertion of such power: She plays tennis with great energy.
5. the habit of vigorous activity; vigor as a characteristic: Foreigners both admire and laugh at American energy.
6. the ability to act, lead others, effect, etc., forcefully.
7. forcefulness of expression: a writing style abounding with energy.
8. Physics . 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.
9. any source of usable power, as fossil fuel, electricity, or solar radiation.
10. "In ecological terms, human flesh is but a transitional event in the continuous redistribution of energy. With the arrival of the artificial body, ecological management is nothing more than the management of hyper-extended flows of nervous energy." Wigley, p. 40.


References - Recycling Recycling, Mark Wigley; www.dictionary.reference.com