A runner needs a lot of energy.
- An example of energy is a person being able to run five miles just after waking up.
- An example of energy is what is created by a wind turbine.
- force of expression or utterance
- potential forces; inherent power; capacity for vigorous action
- [often pl.] such forces or power, esp. in action: to apply all one's energies
- strength or power efficiently exerted
- those resources, as petroleum, coal, gas, wind, nuclear fuel, and sunlight, from which energy in the form of electricity, heat, etc. can be produced
- the available supply of such usable resources: an energy shortage
- Physics the capacity for doing work: abbrev. E
Origin of energyLate Latin energia from Classical Greek energeia from energ?s, active, at work from en-, in + ergon, work
- The capacity for work or vigorous activity: Who has the energy to climb that trail? See Synonyms at strength.
- a. also energies Exertion of vigor or power: a project requiring a great deal of time and energy; devoted her energies to writing songs.b. Vitality and intensity of expression: a speech delivered with energy and emotion.c. Informal A nonphysical force or quality perceived as inhering in a particular place, person, or situation: was turned off by the group's negative energy.
- a. Usable heat or power: Each year Americans consume a high percentage of the world's energy.b. A source of usable power, such as petroleum or coal.
- Physics a. The capacity of a physical system to do work.b. A form, amount, or level of this capacity: “a searing beam of 30 trillion protons, with energies up to 50 million electronvolts” ( Science News )
Origin of energyFrench énergie from Late Latin energīa from Greek energeia from energos active en- in, at ; see en- 2. ergon work ; see werg- in Indo-European roots.
- 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.
- (New Age jargon) An intangible, modifiable force (often characterized as either 'positive' or 'negative') believed to emanate from a person, place or thing and which is (can be) preserved and transferred in human interactions; shared mood or group habit; a vibe, a feeling, an impression.
From Middle French énergie, from Late Latin energia, from Ancient Greek ἐνέργεια (energeia, “action, act, work”), from ἐνεργός (energos, “active”), from ἐν (en, “in”) + ἔργον (ergon, “work”).
energy - Computer Definition
- In physics, the capacity of a system for doing work. It took a lot of energy to write this book. (Take my word for it, so to speak.) See also physics.
- In physics, referring to a source of energy, electrical, mechanical, or otherwise.