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WordReference Random House Learner's Dictionary of American English © 2019 pow•er /ˈpaʊɚ/
USA pronunciation n.
ability to do or act; capability of doing something: He no longer had the power to speak after his stroke. [ uncountable ] at the height of his powers as a pitcher. [ countable ]
political or national strength: the balance of power in Europe. [ uncountable ]
great or marked ability to do or act: the power of nature. [ uncountable ]
the act of having control over others: holding power over people's minds. [ uncountable ]
political control in the government of a country, state, etc.: He was in power during the worst recession in history. [ uncountable ]
authority granted to a person or persons in a particular capacity: the powers of the president to command the military. [ countable ] It's not in my power to help you. [ uncountable ]
a person or thing that has authority: [ countable ] Can you convince the powers upstairs that your plan will succeed?See powers that be below.
a state or nation having authority or influence: The great powers met to decide the fate of the small country. [ countable ]
Physics work done or energy transferred. [ uncountable ]
Mechanics mechanical or electrical energy as distinguished from hand labor: hydroelectric power. [ uncountable ]
[ countable ]
the number one obtains by multiplying a quantity by itself one or more times: The third power of 2 is 8. the exponent of an expression, as 3 in x 3.
a measure of how much a microscope or pair of binoculars magnifies an image. [ uncountable ] v.
[~ + object ]
Mechanics, Electricity(of a fuel, engine, etc.) to supply force to operate (a machine): Electricity powers the commuter trains. adj.
[before a noun ]
Electricitydriven by a motor or electricity: a power mower; power tools.
Electricityconducting electricity: a power cable.
Informal Termsexpressing power; involving, or being like, those having influence: The executives met for a power breakfast. Idioms
Idioms the powers that be, those in highest command; [plural ] the authorities: Can you persuade the powers that be that your plan will work? WordReference Random House Unabridged Dictionary of American English © 2019 pow•er
(pou ′ər), USA pronunciation n.
ability to do or act; capability of doing or accomplishing something.
political or national strength: the balance of power in Europe.
great or marked ability to do or act; strength; might; force.
the possession of control or command over others; authority; ascendancy: power over men's minds.
political ascendancy or control in the government of a country, state, etc.: They attained power by overthrowing the legal government.
legal ability, capacity, or authority: the power of attorney.
delegated authority; authority granted to a person or persons in a particular office or capacity: the powers of the president.
a document or written statement conferring legal authority.
a person or thing that possesses or exercises authority or influence.
a state or nation having international authority or influence: The great powers held an international conference.
a military or naval force: The Spanish Armada was a mighty power.
Often, powers. a deity; divinity: the heavenly powers.
Religion powers, an order of angels. Cf. [Theol. ] angel (def. 1).
Slang Terms a large number or amount: [Dial. ] There's a power of good eatin' at the church social.
work done or energy transferred per unit of time. Symbol: P the time rate of doing work.
Mechanicsmechanical energy as distinguished from hand labor: a loom driven by power.
Physics, Mechanicsa particular form of mechanical or physical energy: hydroelectric power.
Mechanicsenergy, force, or momentum: The door slammed shut, seemingly under its own power.
the product obtained by multiplying a quantity by itself one or more times: The third power of 2 is 8.
(of a number x) a number whose logarithm is a times the logarithm of x (and is called the a th power of x). Symbolically, y = x a is a number that satisfies the equation log y = a log x.
the exponent of an expression, as a in x a. See cardinal number (def. 2).
the magnifying capacity of a microscope, telescope, etc., expressed as the ratio of the diameter of the image to the diameter of the object. Cf. magnification (def. 2). the reciprocal of the focal length of a lens.
Idioms the powers that be, those in supreme command; the authorities: The decision is in the hands of the powers that be. v.t.
Electricityto supply with electricity or other means of power: Atomic energy powers the new submarines.
to give power to; make powerful: An outstanding quarterback powered the team in its upset victory.
to inspire; spur; sustain: A strong faith in divine goodness powers his life.
Mechanics, Electricity(of a fuel, engine, or any source able to do work) to supply force to operate (a machine): An electric motor powers this drill.
to drive or push by applying power: She powered the car expertly up the winding mountain road.
Computing power down, to shut off.
Computing power up, to turn on. adj.
Electricityoperated or driven by a motor or electricity: a power mower; power tools.
power-assisted: His new car has power brakes and power windows.
Electricityconducting electricity: a power cable. Informal Termsexpressing or exerting power; characteristic of those having authority or influence: to host a power lunch.
Vulgar Latin * potēre (replacing Latin posse to be able, have power). See potent 1 Anglo-French poueir, poer, noun, nominal use of infinitive: to be able Middle English pouer( e), poer( e) 1250–1300
1. capacity. See corresponding entry in Unabridged 3. energy. See See corresponding entry in Unabridged strength. 4, 5. sway, rule, sovereignty. See corresponding entry in Unabridged
1. incapacity. See corresponding entry in Unabridged 3. weakness. See corresponding entry in Unabridged
Collins Concise English Dictionary © HarperCollins Publishers::
power / ˈpaʊə/ n ability or capacity to do something ( often plural) a specific ability, capacity, or faculty political, financial, social, etc, force or influence control or dominion or a position of control, dominion, or authority a state or other political entity with political, industrial, or military strength a person who exercises control, influence, or authority: he's a power in the state a prerogative, privilege, or liberty legal authority to act, esp in a specified capacity, for another the document conferring such authority a military force military potential the value of a number or quantity raised to some exponent another name for exponent 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 a measure of the rate of doing work expressed as the work done per unit time. It is measured in watts, horsepower, etc Symbol: P 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 (: as modifier) a power amplifier the ability to perform work mechanical energy as opposed to manual labour (: as modifier) a power mower a particular form of energy: nuclear power 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 another word for magnification informal a large amount or quantity: a power of good ( plural) the sixth of the nine orders into which the angels are traditionally divided in medieval angelology in one's power ⇒ ( often followed by an infinitive) able or allowed (to) in someone's power ⇒ under the control or sway of someone the powers that be ⇒ the established authority or administration vb ( transitive) to give or provide power to to fit (a machine) with a motor or engine ( intransitive) slang to travel with great speed or force Etymology: 13 th Century: from Anglo-Norman poer, from Vulgar Latin potēre (unattested), from Latin posse to be able
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