The impetus behind all motion and all activity.
The capacity to do work.
(physics) A quantity that denotes the ability to do work and is measured in a unit dimensioned in mass × distance²/time² (ML²/T²) or the equivalent.
SI: joule (J), kilowatt-hour (kW·h)
CGS: erg (erg)
Customary: foot-pound-force, calorie, kilocalorie (i.e. dietary calories), BTU, liter-atmosphere, ton of TNT
(New Age jargon) An intangible force that is preserved and transferred in human interactions; shared mood or group habit.