energy
Use Energy in a sentence
ər noun, plural en·er·gies.
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.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
|
Link To energy
00:10
Energy
is always a great word to know.
So is fructose. Does it mean:
| Symbol: C; atomic weight: 12.01115; atomic number: 6 |
| the simple sugar found in honey and fruits |
Collins
World English Dictionary
energy (ˈɛnədʒɪ) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n , pl -gies | |
| 1. | intensity or vitality of action or expression; forcefulness |
| 2. | capacity or tendency for intense activity; vigour |
| 3. | vigorous or intense action; exertion |
| 4. | physics |
| a. the capacity of a body or system to do work | |
| b. E 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) | |
| 5. | kinetic energy See also potential energy a source of power |
| [C16: from Late Latin energīa, from Greek energeia activity, from energos effective, from | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
energy
1590s, from M.Fr. energie, from L.L. energia, from Gk. energeia "activity, operation," from energos "active, working," from en- "at" + ergon "work" (see urge (v.)). Used by Aristotle with a sense of "force of expression;" broader meaning of "power" is first recorded in English
1660s. Energy crisis first attested 1970.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Cite This Source
American Heritage
Medical Dictionary
energy en·er·gy (ěn'ər-jē)
n.
The capacity for work or vigorous activity; vigor; power.
The capacity of a physical system to do work.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
| energy (ěn'ər-jē) Pronunciation Key
The capacity or power to do work, such as the capacity to move an object (of a given mass) by the application of force. Energy can exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another. It is measured by the amount of work done, usually in joules or watts. See also conservation of energy, kinetic energy, potential energy. Compare power, work. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary
energy definition
In physics, the ability to do work. Objects can have energy by virtue of their motion (kinetic energy), by virtue of their position (potential energy), or by virtue of their mass (see E = mc2).
Note: The most important property of energy is that it is conserved — that is, the total energy of an isolated system does not change with time. This is known as the law of conservation of energy. Energy can, however, change form; for example, it can be turned into mass and back again into energy.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Example sentences
Scientists have invented a plastic solar cell that can turn the sun's power into electrical energy, even on a cloudy day.
More nonsense gets spewed about nuclear power than any other form of energy.
Here, the exterior will sport photovoltaic cells to collect solar power and make the building energy self-sufficient.
Also essential were the thrust of power, the lift of influence, the energy of competing egos.
Matching Quote
Nearby Words
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
