power

American  

[pou-er] / ˈpaʊ ər /

noun

• powers
  plural

1. ability to do or act; capability of doing or accomplishing something.

   Everyone has the power to better themselves.

   Synonyms:

   capacity

   Antonyms:

   incapacity

2. political or national strength.

   The Second World War changed the balance of power in Europe.

3. great or marked ability to do or act; strength; might; force.

   Synonyms:

   energy

   Antonyms:

   weakness

4. the possession of control or command over people; authority; influence.

   Words have tremendous power over our minds.

5. political ascendancy or control in the government of a country, state, etc..

   They attained power by overthrowing the legal government.

   Synonyms:

   sovereignty, rule, sway, ascendancy

6. legal ability, capacity, or authority.

   the legislative powers vested in Congress.

7. delegated authority; authority granted to a person or persons in a particular office or capacity.

   a delegate with power to mediate disputes.

8. a document or written statement conferring legal authority.

9. a person or thing that possesses or exercises authority or influence.

10. a state or nation having international authority or influence.

    The great powers held an international conference.

11. a military or naval force.

    The Spanish Armada was a mighty power.

12. Often powers a deity; divinity.

    the heavenly powers.

13. Theology. powers, an order of angels.

14. Dialect. a large number or amount.

    There's a power of good eatin' at the church social.

15. Physics.

    1. work done or energy transferred per unit of time. P

    2. the time rate of doing work.

16. mechanical energy as distinguished from hand labor.

    The factory recently began using looms driven by power.

17. a particular form of mechanical or physical energy.

    hydroelectric power.

18. energy, force, or momentum.

    The door slammed shut, seemingly under its own power.

19. Mathematics.

    1. the product obtained by multiplying a quantity by itself one or more times.

       The third power of 2 is 8.

    2. (of a numberx ) a number whose logarithm is a times the logarithm of x (and is called the a th power ofx ). Symbolically, y = xa is a number that satisfies the equation log y = a log x.

    3. the exponent of an expression, as a in xa.

    4. cardinal number.

20. Optics.

    1. the magnifying capacity of a microscope, telescope, etc., expressed as the ratio of the diameter of the image to the diameter of the object.

    2. the reciprocal of the focal length of a lens.

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verb (used with object)

• powers,
  present (3rd person singular)
• powered,
  past participle,  past
• powering
  present participle

1. to supply with electricity or other means of power.

   Atomic energy powers the new submarines.

2. to give power to; make powerful.

   An outstanding quarterback powered the team in its upset victory.

3. to inspire; spur; sustain.

   A strong faith in divine goodness powers his life.

4. (of a fuel, engine, or any source able to do work) to supply force to operate (a machine).

   An electric motor powers this drill.

5. to drive or push by applying power.

   She powered the car expertly up the winding mountain road.

adjective

1. operated or driven by a motor or electricity.

   a power mower;

   power tools.

2. power-assisted.

   cars with power brakes and power windows.

3. conducting electricity.

   a power cable.

4. Informal. expressing or exerting power, especially in business; involving or characteristic of those having authority or influence.

   She dressed for court in hose, heels, and a conservative power suit.

   The corporate-sponsored lobbyists are fueled by power breakfasts of ice-cold orange juice and croissants.

verb phrase

1. power down to shut off.

2. power up to turn on.

idioms

1. power behind the throne, someone or something that has a great deal of influence and control despite lacking official status.

   Although the chairman is ostensibly in charge, his secretary makes all the decisions and is the real power behind the throne.

2. the powers that be, those in supreme command; the authorities.

   The decision is in the hands of the powers that be.

power British  

/ ˈpaʊə /

noun

1. ability or capacity to do something

2. (often plural) a specific ability, capacity, or faculty

3. political, financial, social, etc, force or influence

4. control or dominion or a position of control, dominion, or authority

5. a state or other political entity with political, industrial, or military strength

6. a person who exercises control, influence, or authority

   he's a power in the state

7. a prerogative, privilege, or liberty

8. 1. legal authority to act, esp in a specified capacity, for another

   2. the document conferring such authority

9. 1. a military force

   2. military potential

10. maths

    1. the value of a number or quantity raised to some exponent

    2. another name for exponent

11. statistics the probability of rejecting the null hypothesis in a test when it is false. The power of a test of a given null depends on the particular alternative hypothesis against which it is tested

12.  P.  physics engineering a measure of the rate of doing work expressed as the work done per unit time. It is measured in watts, horsepower, etc

13. 1. the rate at which electrical energy is fed into or taken from a device or system. It is expressed, in a direct-current circuit, as the product of current and voltage and, in an alternating-current circuit, as the product of the effective values of the current and voltage and the cosine of the phase angle between them. It is measured in watts

    2. ( as modifier )

       a power amplifier

14. the ability to perform work

15. 1. mechanical energy as opposed to manual labour

    2. ( as modifier )

       a power mower

16. a particular form of energy

    nuclear power

17. 1. a measure of the ability of a lens or optical system to magnify an object, equal to the reciprocal of the focal length. It is measured in dioptres

    2. another word for magnification

18. informal a large amount or quantity

    a power of good

19. (plural) the sixth of the nine orders into which the angels are traditionally divided in medieval angelology

20. (often foll by an infinitive) able or allowed (to)

21. under the control or sway of someone

22. the established authority or administration

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verb

1. to give or provide power to

2. to fit (a machine) with a motor or engine

3. slang (intr) to travel with great speed or force

power Scientific  

/ pou′ər /

1. The source of energy used to operate a machine or other system.

2. The rate at which work is done, or energy expended, per unit time. Power is usually measured in watts (especially for electrical power) or horsepower (especially for mechanical power). For a path conducting electrical current, such as a component in an electric circuit, P = VI, where P is the power dissipated along the path, V is the voltage across the path, and I is the current through the path.

3. Compare energy work

4. Mathematics The number of times a number or expression is multiplied by itself, as shown by an exponent. Thus ten to the sixth power, or 10 ⁶, equals one million.

5. A number that represents the magnification of an optical instrument, such as a microscope or telescope. A 500-power microscope can magnify an image to 500 times its original size.

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power More Idioms  

More idioms and phrases containing power

• corridors of power
• more power to someone
• staying power

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Synonym Usage

See strength.

Other Word Forms

Derived Forms

• counterpower
  noun
• repower
  verb
• de-power
  verb (used with object)

Inflected Forms

Nouns

• powers
  plural

Participles

• powering
  present
• powered
  past

Conjugated Forms

Present

• power
  simple
• powers
  simple
• have powered
  perfect
• has powered
  perfect
• am powering
  progressive
• are powering
  progressive
• is powering
  progressive
• have been powering
  perfect progressive
• has been powering
  perfect progressive

Past

• powered
  simple
• had powered
  perfect
• was powering
  progressive
• were powering
  progressive
• had been powering
  perfect progressive

Future

• will power
  simple
• will have powered
  perfect
• will be powering
  progressive
• will have been powering
  perfect progressive

Etymology

Origin of power

First recorded in 1300–50; Middle English poair(e), poer(e), poeir, power, from Anglo-French, Old French po(u)eir, poer, poor, noun use of infinitive poe(i)r, pooir “to be able,” from Vulgar Latin potēre (unrecorded), replacing Latin posse “to be able, have power”; cf. potent ¹ ( def. ), puissant ( def. )

Explanation

Someone with power has physical strength or they're in control of things. So a weakling who's in charge of a business still has a lot of power. Power comes from the Latin word potere, which means "to be able." But things with power are much more than able — they're able to exert a lot of force. "The powers that be" are those who hold authority, and "the power behind the throne" refers to the people who exert influence without being formally in charge. When used as a verb, power means "to supply with mechanical or electrical energy," as in a nuclear-powered submarine.

Example Sentences

See Examples For:

power powers powered powering

Elsewhere in Miami, prominent Cuban-Americans are mapping out a provisional government, recruiting engineers to study floating power stations, and strategizing on repairs to the island’s crumbling infrastructure.

From The Wall Street Journal ● Sep. 21, 2026

How did it come to this after just 16 months in power?

From BBC ● Sep. 20, 2026

Some offices or Cabinet posts are just imbued with more power than others.

From Salon ● Sep. 20, 2026

"Comparing the way our muscles contract to the way Spirostomum works is like comparing gas to electric power," Elting says.

From Science Daily ● Sep. 19, 2026

For a time, her sisters, Kate and Maggie Fox, held greater power and a larger place in the public consciousness as the original spirit mediums.

From "American Spirits" by Barb Rosenstock

Under the Crime and Policing Act 2026, introduced earlier this year, police have new powers to tackle the problem.

From BBC ● Sep. 20, 2026

This is reminiscent of what historians call “the German question,” a debate among European powers in the 19th century about how powerful a unified Germany could become before it posed a threat to peace.

From The Wall Street Journal ● Sep. 19, 2026

During the interview, Cooper-Lesadd was also asked about her view on independence, and further powers for the Welsh government, two things that Plaid Cymru has campaigned on.

From BBC ● Sep. 16, 2026

Both powers are "developing a more realistic and shared understanding of these risks, thereby heightening the sense of urgency" to work together, Sun Chenghao of Tsinghua University's Center for International Security and Strategy told AFP.

From Barron's

“With all your powers, then—can you remove this curse?”

From "The Hidden Gallery" by Maryrose Wood

The latest revolution in drone warfare is jet powered.

From The Wall Street Journal ● Sep. 17, 2026

Quasars are exceptionally bright cosmic objects powered by supermassive black holes that are actively consuming gas.

From Science Daily ● Sep. 15, 2026

Venezuela desperately needs to boost its electricity output to kickstart its oil industry -- and keep its citizens powered up.

From Barron's ● Sep. 12, 2026

Kyle Tucker powered the Dodgers’ offense, finishing a double shy of the cycle while recording a season-high five RBIs.

From Los Angeles Times ● Sep. 12, 2026

The Shareefs found their robot powered off, lying in a ditch by the road.

From "The Wild Robot Escapes" by Peter Brown

What’s powering this incredible, unprecedented run is Bitcoin, Bitcoin, and more Bitcoin.

From Slate ● Sep. 20, 2026

Diesel is the economy’s workhorse fuel, powering heavy-duty vehicles and machinery.

From MarketWatch ● Sep. 15, 2026

Soybean oil becomes biodiesel and aviation fuel, powering school buses and commercial airplanes.

From Salon ● Sep. 13, 2026

Plus: Monster floods threaten Nepal’s hydropower bet, a trio of Pacific hurricanes and what’s really powering China’s EV boom.

From The Wall Street Journal ● Sep. 11, 2026

Did he think about all that before powering the thing down and shoving it beneath his mattress?

From "Clean Getaway" by Nic Stone

Related Words

• authority
• clout
• influence
• jurisdiction
• law
• leadership
• management
• prestige
• privilege
• right
• rule
• sovereignty
• strength
• weight