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power

(pou'ər)

The ability or capacity to perform or act effectively.
A specific capacity, faculty, or aptitude. Often used in the plural: her powers of concentration.
Strength or force exerted or capable of being exerted; might. See synonyms at strength.
The ability or official capacity to exercise control; authority.
A person, group, or nation having great influence or control over others: the western powers.
The might of a nation, political organization, or similar group.
Forcefulness; effectiveness: a novel of unusual power.
Chiefly Upper Southern U.S. A large number or amount. See Regional Note at powerful.
1. The energy or motive force by which a physical system or machine is operated: turbines turned by steam power; a sailing ship driven by wind power.
2. The capacity of a system or machine to operate: a vehicle that runs under its own power.
3. Electrical or mechanical energy, especially as used to assist or replace human energy.
4. Electricity supplied to a home, building, or community: a storm that cut off power to the whole region.
Physics. The rate at which work is done, expressed as the amount of work per unit time and commonly measured in units such as the watt and horsepower.
Electricity.
1. The product of applied potential difference and current in a direct-current circuit.
2. The product of the effective values of the voltage and current with the cosine of the phase angle between current and voltage in an alternating-current circuit.
Mathematics.
1. See exponent (sense 3).
2. The number of elements in a finite set.
Statistics. The probability of rejecting the null hypothesis where it is false.
A measure of the magnification of an optical instrument, such as a microscope or telescope.
powers Christianity. The sixth of the nine orders of angels in medieval angelology.
Archaic. An armed force.

adj.

Of or relating to political, social, or economic control: a power struggle; a power base.
Operated with mechanical or electrical energy in place of bodily exertion: a power tool; power car windows.
Of or relating to the generation or transmission of electricity: power companies; power lines.
Informal. Of or relating to influential business or professional practices: a pinstriped suit with a power tie; met with high-level executives at a power breakfast.

tr.v., -ered, -er·ing, -ers.

To supply with power, especially mechanical power.

idiom:

powers that be

Those who hold effective power in a system or situation: a plan vetoed by the powers that be.

[Middle English, from Old French pooir, to be able, power, from Vulgar Latin *potēre, to be able, from Latin potis, able, powerful.]

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Sci-Tech Encyclopedia: Power

The time rate of doing work. Like work, power is a scalar quantity, that is, a quantity which has magnitude but no direction. Some units often used for the measurement of power are the watt (1 joule of work per second) and the horsepower (550 foot-pounds of work per second). See also Work.

Power is a concept which can be used to describe the operation of any system or device in which a flow of energy occurs. In many problems of apparatus design, the power, rather than the total work to be done, determines the size of the component used. Any device can do a large amount of work by performing for a long time at a low rate of power, that is, by doing work slowly. However, if a large amount of work must be done rapidly, a high-power device is needed. High-power machines are usually larger, more complicated, and more expensive than equipment which need operate only at low power. A motor which must lift a certain weight will have to be larger and more powerful if it lifts the weight rapidly than if it raises it slowly. An electrical resistor must be large in size if it is to convert electrical energy into heat at a high rate without being damaged.

Thesaurus: power

noun

Capacity or power for work or vigorous activity: animation, energy, force, might, potency, puissance, sprightliness, steam, strength. Informal get-up-and-go, go, pep, peppiness, zip. See action/inaction.
The state or quality of being physically strong: brawn, might, muscle, potence, potency, powerfulness, puissance, sinew, strength, thew (often used in plural). See strong/weak.
The right and power to command, decide, rule, or judge: authority, command, control, domination, dominion, jurisdiction, mastery, might, prerogative, sovereignty, sway. Informal say-so. See over/under.
Effective means of influencing, compelling, or punishing: force, weight. Informal clout, muscle. See over/under, strong/weak.
The capacity to exert an influence: force, forcefulness, magnetism. See strong/weak.
A great deal: abundance, mass, mountain, much, plenty, profusion, wealth, world. Informal barrel, heap, lot, pack, peck², pile. Regional sight. See big/small/amount.

Antonyms: power

Definition: ability (mental), competence
Antonyms: inability, incapacity, incompetence, weakness

n

Definition: control, dominance
Antonyms: inefficiency, subservience, surrender, weakness, yielding

n

Definition: physical ability, capacity
Antonyms: debility, disability, impairment, impotence, infirmity, weakness

Britannica Concise Encyclopedia: power

In science and engineering, the time rate of doing work or delivering energy. Power (P) can be expressed as the amount of work done (W), or energy transferred, divided by the time interval (t): P = W/t. A given amount of work can be done by a low-powered motor in a long time or by a high-powered motor in a short time. Units of power are those of work (or energy) per unit time, such as foot-pounds per minute, joules per second (called watts), or ergs per second. Power can also be expressed as the product of the force (F) applied to move an object and the speed (v) of the object in the direction of the force: P = Fv. See also horsepower.

For more information on power, visit Britannica.com.

Architecture: power

The rate at which work is performed, energy is transformed or transferred, or energy is consumed; usually expressed in watts or horsepower.

Philosophy Dictionary: power

(metaphysical). A capacity or ability to bring about an effect or undergo a modification. Water has the power to dissolve salt; salt has the capacity to dissolve in water. The metaphysical problem lies in relating powers to other (‘categorical’) properties, the properties which are intrinsic to a substance and which do not require it being put in relation to other objects in order to be manifested. Powers seem to depend on more than intrinsic structure, but also on the laws of nature or other natural features of the universe surrounding the bearer of the powers. All claims about powers and their grounds are controversial. See also finkish.

Sports Science and Medicine: power

1. Technically defined as the rate at which energy is expended or work is done, power is measured in watts (W) of work per unit time (power = work done/time taken). The amount of power generated by a person, therefore, depends on two important components: speed and strength. Power is the key component for most athletic activities. A powerful athlete has to be able to transform physical energy into force at a fast rate. This ability depends on the amount of ATP produced per unit time. Sprinting, jumping, and throwing events are activities requiring great power and very high rates of ATP production. Compare capacity.

2. The ability of a person or group to control the behaviour of others even when actively opposed.

3. The capacity to intervene in a given set of circumstances to alter them in some way.

Columbia Encyclopedia: power,

in physics, time rate of doing work or of producing or expending energy. The unit of power based on the English units of measurement is the horsepower, devised for describing mechanical power by James Watt, who estimated that a horse can do 550 ft-lb of work per sec; a foot-pound is the work done when a weight (force) of 1 lb is moved through a distance of 1 ft. The unit of power in the metric system is the watt, named in honor of James Watt and equal to 1 joule per sec; the watt is used for measuring electric power in most countries, even those still using English units for other quantities. In common usage, the terms power and energy have become synonymous; for example, electrical energy is usually referred to as electric power (see power, electric). See also energy, sources of.

Science Dictionary: power

In physics, the amount of energy put out or produced in a given amount of time. Power is often measured in watts or kilowatts.

In mathematics, a power is a number multiplied by itself the number of times signified by an exponent placed to the right and above it. Thus, 3², which means 3 × 3, is a power — the second power of three, or three squared, or nine. The expression 10⁶, or ten to the sixth power, means 10 × 10 × 10 × 10 × 10 × 10, or one million.

Abbreviations: POWER

is short for:

Meaning	Category
PROFS Operational Weather Education and Research	Academic & Science->Ocean Science
Peers Offering Wellness Education Resources	Community->Educational
Pennsylvania Online World Of Electronic Resources	Internet
People Operating Wisely Enjoyably And Responsibly	Community
People Organized To Win Employment Rights	Business->General
People Organized With Evangelistic Results	Community->Religion
Performance Optimization With Enhanced Risc	Computing->Hardware
Perspectives On Work Education And Responsibility	Business->General
Prepare Organize Work Evaluate And Rethink	Governmental->Military
Prepare Organize Write Edit And Rewrite	Community->Media
Presenting Opportunities Where Everyone Rises	Community
Priority Output Writer, Execution processors and input Readers	Computing->General
Productivity Optimization Workflow Empowerment Reengineering	Business->General
Promoting Outstanding Work Ethics And Responsibility	Governmental->US Government
Providing Oneself With Employment Resources	Business->Positions

Click here to submit an acronym.

Word Tutor: power

IN BRIEF: Possession of control, authority, or influence over others.

Ideas...They have the power. — Napoleon Hill, American writer of "Think and Grow Rich."

Wikipedia: power (physics)

In physics, power (symbol: P) is the rate at which work is performed or energy is transmitted, or the amount of energy required or expended for a given unit of time. As a rate of change of work done or the energy of a subsystem, power is:

$P = \frac{W}{t} \,$

where

P is power

W is work

t is time.

The average power (often simply called "power" when the context makes it clear) is the average amount of work done or energy transferred per unit time. The instantaneous power is then the limiting value of the average power as the time interval Δt approaches zero.

$P = \lim_{\Delta t\rightarrow 0} \frac{\Delta W}{\Delta t} = \lim_{\Delta t\rightarrow 0} P_\mathrm{avg} \,$

When the rate of energy transfer or work is constant, all of this can be simplified to

$P = \frac{W}{t} = \frac{E}{t}$ ,

where W and E are, respectively, the work done or energy transferred in time t (usually measured in seconds).

Units

The units of power are units of energy divided by time. The SI unit of power is the watt (W), which is equal to one joule per second. Non-SI units of power include horsepower (HP), Pferdestärke (PS), cheval vapeur (CV) and foot-pounds per minute. One unit of horsepower is equivalent to 33,000 foot-pounds per minute, or the power required to lift 550 pounds one foot in one second, and is equivalent to about 746 watts. Other units include dBm, a logarithmic measure with 1 milliwatt as reference; and (food) calories per hour (often referred to as kilocalories per hour).

Mechanical power

In mechanics, the work done on an object is related to the forces acting on it by

$W = F \cdot \Delta s \,$

where

F is force

Δs is the displacement of the object.

This is often summarized by saying that work is equal to the force acting on an object times its displacement (how far the object moves while the force acts on it). Note that only motion that is along the same axis as the force "counts", however; motion in the same direction as force gives positive work, and motion in the opposite direction gives negative work, while motion perpendicular to the force yields zero work.

Differentiating by time gives that the instantaneous power is equal to the force times the object's velocity v(t):

$P(t) = \mathbf{F}(t) \cdot \mathbf{v}(t) \,$ .

The average power is then

$P_\mathrm{avg} = \frac{1}{\Delta t}\int\mathbf{F} \cdot \mathbf{v}\;\mathrm{d}t \,$ .

This formula is important in characterizing engines—the power put out by an engine is equal to the force it exerts times its velocity.

In rotational systems, power is related to the torque (τ) and angular velocity (ω):

$P(t) = \mathbf{\tau}(t) \cdot \mathbf{\omega}(t) \,$ .

The average power is therefore

$P_\mathrm{avg}=\frac{1}{\Delta t}\int\mathbf{\tau} \cdot \mathbf{\omega}\;\mathrm{d}t \,$ .

Electrical power

Main article: Electric power

Instantaneous electrical power

The instantaneous electrical power P delivered to a component is given by

$P(t) = I(t) \cdot V(t) \,$

where

P(t) is the instantaneous power, measured in watts (joules per second)

V(t) is the potential difference (or voltage drop) across the component, measured in volts

I(t) is the current flowing through it, measured in amperes

If the component is a resistor, then:

$P=I^2 \cdot R = \frac{V^2}{R} \,$

where

$R = V/I \,$

is the resistance, measured in ohms.

If the component is reactive (e.g. a capacitor or an inductor), then the instantaneous power is negative when the component is giving stored energy back to its environment, i.e., when the current and voltage are of opposite signs.

Average electrical power for sinusoidal voltages

The average power consumed by a sinusoidally-driven linear two-terminal electrical device is a function of the root mean square (rms) values of the voltage across the terminals and the current passing through the device, and of the phase angle between the voltage and current sinusoids. That is,

$P = I \cdot V \cdot \cos \varphi \,$

where

P is the average power, measured in watts

I is the root mean square value of the sinusoidal alternating current (AC), measured in amperes

V is the root mean square value of the sinusoidal alternating voltage, measured in volts

φ is the phase angle between the voltage and the current sine functions.

The amplitudes of sinusoidal voltages and currents, such as those used almost universally in mains electrical supplies, are normally specified in terms of root mean square values. This makes the above calculation a simple matter of multiplying the two stated numbers together.

This figure can also be called the effective power, as compared to the larger apparent power which is expressed in volt-amperes (VA) and does not include the cos φ term due to the current and voltage being out of phase. For simple domestic appliances or a purely resistive network, the cos φ term (called the power factor) can often be assumed to be unity, and can therefore be omitted from the equation. In this case, the effective and apparent power are assumed to be equal.

Average electrical power for AC

$P = {1 \over T} \int_{0}^{T} i(t) v(t)\, dt \,$

Where v(t) and i(t) are, respectively, the instantaneous voltage and current as functions of time.

For purely resistive devices, the average power is equal to the product of the rms voltage and rms current, even if the waveforms are not sinusoidal. The formula works for any waveform, periodic or otherwise, that has a mean square; that is why the rms formulation is so useful.

For devices more complex than a resistor, the average effective power can still be expressed in general as a power factor times the product of rms voltage and rms current, but the power factor is no longer as simple as the cosine of a phase angle if the drive is non-sinusoidal or the device is not linear.

Peak power and duty cycle

In a train of identical pulses, the instantaneous power is a periodic function of time. The ratio of the pulse duration to the period is equal to the ratio of the average power to the peak power. It is also called the duty cycle (see text for definitions).

In the case of a periodic signal $s (t)$ of period $T$ , like a train of identical pulses, the instantaneous power $p (t) = | s (t) | 2$ is also a periodic function of period $T$ . The peak power is simply defined by:

P 0 = max(p (t))

The peak power is not always readily measurable, however, and the measurement of the average power $P avg$ is more commonly performed by an instrument. If one defines the energy per pulse as:

$\epsilon_\mathrm{pulse} = \int_{0}^{T}p(t) \mathrm{d}t \,$

then the average power is:

$P_\mathrm{avg} = \frac{1}{T} \int_{0}^{T}p(t) \mathrm{d}t = \frac{\epsilon_\mathrm{pulse}}{T} \,$ .

One may define the pulse length $τ$ such that $P 0 τ = ε pulse$ so that the ratios

$\frac{P_\mathrm{avg}}{P_0} = \frac{\tau}{T} \,$

are equal. These ratios are called the duty cycle of the pulse train.

Power in optics

Main article: Optical power

In optics, or radiometry, the term power sometimes refers to radiant flux, the average rate of energy transport by electromagnetic radiation, measured in watts. The term "power" is also, however, used to express the ability of a lens or other optical device to focus light. It is measured in dioptres (inverse metres), and equals the inverse of the focal length of the optical device.

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Misspellings: power

Common misspelling(s) of power

pwoer

Translations: Translations for: Power

Dansk (Danish)
n. - magt, bemyndigelse, evne, kraft, strøm
v. tr. - forsyne med drivkraft, mase på
adj. - strøm-, magt-

idioms:

be in power være ved magten
power base magtgrundlag
power behind the throne den skjulte magt
power bloc magtblok
power block magtblok
power breakfast morgenmøde blandt betydningsfulde personer i politik og erhvervsliv
power cut strømafbrydelse
power down slukke for strømmen
power failure strømsvigt
power game magtspil
power line stærkstrømsledning
power of attorney fuldmagt
power plant kraftaggregat, kraftanlæg
power play magtspil
power point stikkontakt
power politics magtpolitik
power station el-værk
power steering servostyring
power supply strømforsyning
power train motor og transmission
power up tænde for
sphere of power magtområde
state power statsmagt
superior power overordnet magt
supreme power øverste magt
take power tage magten
the powers that be myndighederne
thermal power station varmekraftværk
to the power of til (nogens) magt

Nederlands (Dutch)
kracht, macht, vermogen, bevoegdheid, aandrijving, autoriteit, effectiviteit, elektriciteit, vergroting (optica), exponent, vermogen (mechanica), kracht geven

Français (French)
n. - (gén, Pol) pouvoir, puissance, influence, pouvoir, attributions, force, violence, (Phys, Tech, gén) énergie électrique, courant, (Mécan) puissance, (Sci) puissance, (Math) puissance, puissance (pays)
v. tr. - faire marcher (moteur), propulser (bateau, avion)
adj. - électrique, fonctionnant à l'électricité

idioms:

in power (être/accéder) au pouvoir
in the power of (être) en son pouvoir de
power base base politique
power behind the throne (être) l'éminence grise, tirer les ficelles
power bloc bloc de puissance
power block bloc de nations
power breakfast petit-déjeuner d'affaire
power cut coupure de courant
power down éteindre, arrêter le courant
power failure arrêt/panne de courant
power game rapport de force
power line ligne à haute tension
power of attorney procuration
power plant centrale électrique
power play (US, fig) coup de force
power point prise de courant
power politics politique de la force armée, politique d'intimidation
power station (US) centrale électrique
power steering direction assistée
power supply alimentation (électrique)
power train train d'atterrissage
power up allumer, mettre le courant
sphere of power sphère d'influence
state power puissance étatique
superior power puissance supérieure
supreme power puissance suprême
take power prendre le pouvoir
the powers that be les autorités
thermal power station centrale thermique
to the power of (Math) puissance, à la puissance

Deutsch (German)
n. - Kraft, Wucht, Macht, Vermögen, Autorität, Machtfaktor, Potenz, Herrschaft, Energie, Strom, Befugnis
v. - antreiben, betreiben
adj. - Macht-, mächtig

idioms:

in power an der Macht sein
in the power of in der Macht von
power base Stütze, Anhängerschaft
power behind the throne graue Eminenz
power bloc Machtblock
power block Staatengruppe, die eine internat. polit. Kraft darstellt
power breakfast Geschäftsfrühstück
power cut Stromsperre, Stromausfall
power down ausmachen
power failure Stromausfall
power game Machtspiel
power line Starkstromleitung
power of attorney Vollmacht
power plant Kraftwerk
power play konzentrierter Einsatz von Spielern, Ressourcen o.ä.
power point Steckdose
power politics Machtpolitik
power station Elektrizitätswerk, Kraftwerk
power steering Servolenkung
power supply Energieversorgung
power train Getriebe, Kraftübertragungsweg
power up anmachen
sphere of power Machtbereich
state power staatliche Gewalt
superior power Übermacht
supreme power Oberherrschaft
take power die Macht übernehmen
the powers that be Regierung
thermal power station Wärmekraftwerk
to the power of (Math.) hoch

Ελληνική (Greek)
n. - ισχύς, δύναμη, δυναμικό, ικανότητα, εξουσία, αρχή, ιδιοφυϊα, ταλέντο, (φυσ.) (ηλεκτρική ή κινητήρια) ενέργεια, δύναμη, εξουσία, επιρροή, (μαθημ.) δύναμη (αριθμού)
v. - κινώ (με μηχανική ενέργεια), παρέχω ενέργεια σε, εφοδιάζω με κινητήρα ή κινητήρια δύναμη
adj. - μηχανικός, υψηλής ισχύος

idioms:

be in power είμαι στην εξουσία
power base βάση ισχύος
power behind the throne ο (κρυφός αλλά) ουσιαστικός φορέας εξουσίας
power bloc συνασπισμός δυνάμεων
power block συνασπισμός δυνάμεων
power breakfast βαρυσήμαντο πρόγευμα εργασίας
power cut προσωρινή διακοπή ρεύματος
power down σβήνω (υπολογιστή)
power failure προσωρινή διακοπή ρεύματος
power game παιχνίδι εξουσίας
power line ηλεκτροφόρο καλώδιο, γραμμή μεταφοράς
power of attorney (νομ.) πληρεξούσιο
power plant εργοστάσιο παραγωγής ηλεκτρικής ενεργείας
power play στρατήγημα
power point (Βρετ.) ρευματοδότης, πρίζα
power politics δυναμική πολιτική
power station ηλεκτροπαραγωγικός σταθμός
power steering μηχανοκίνητη οδήγηση
power supply (Η/Υ) παροχή ισχύος, κν. τροφοδοτικό
power train μηχανισμός μετάδοσης κίνησης στον άξονα αυτοκινήτου
power up ανάβω (υπολογιστή)
sphere of power σφαίρα επιρροής
state power κρατική εξουσία
superior power ανώτερη δύναμη
supreme power υπέρτατη δύναμη
take power παίρνω την εξουσία
the powers that be οι κρατούντες, η ιθύνουσα τάξη
thermal power station σταθμός θερμικής ενέργειας
to the power of (μαθ.) στην ... δύναμη

Italiano (Italian)
vigore, capacità, potere, corrente, prestazione, padronanza, autorità, trazione, motorizzare, alimentare

idioms:

be in power essere al potere
power base base di potere
power behind the throne eminenza grigia
power block blocco di potenze
power breakfast ricca colazione
power cut interruzione di corrente
power failure arresto di corrente
power game gioco di potere
power line linea ad alta tensione
power of attorney procura
power plant impianto di energia
power play offensiva
power point presa di corrente
power politics politica di potere
power station centrale elettrica
power steering servosterzo
power train trasmissione
sphere of power sfera d'influenza
state power potere
superior power potere superiore
supreme power autorità suprema
take power assumere il potere
the powers that be le autorità in carica
thermal power station centrale termoelettrica
to the power of alla potenza
world power potenza mondiale

Português (Portuguese)
n. - poder (m), força (f)
v. - ligar, carregar
adj. - elétrico, de potência

idioms:

be in power estar no poder
power base alicerce do poder
power behind the throne o poder por trás do trono
power block bloqueio político
power breakfast café da manhã reforçado
power cut corte de energia
power failure queda de energia
power game jogo de poder
power line linha de transmissão
power of attorney procuração
power plant usina de energia elétrica
power play jogo de poder
power point tomada elétrica
power politics política de força
power station usina de energia elétrica
power steering direção hidráulica
power train trem elétrico
sphere of power esfera de poder
state power poder do estadual
superior power poder superior
supreme power poder supremo
take power tomar o poder
the powers that be os poderes constituídos
thermal power station usina termoelétrica
to the power of o poder de
world power poder mundial

Русский (Russian)
сила, мощность, власть, степень, полномочие, производительность, приводить в действие, служить приводным двигателем

idioms:

be in power находиться у власти
power base политическая основа
power behind the throne серый кардинал
power block правящего блока
power breakfast встреча над завтраком правящего блока
power cut перерыв в подаче электроэнергии
power failure перерыв в подаче электроэнергии
power game кто кого
power line линия электропередач
power of attorney доверенность
power plant электростанция
power play схватка власти
power point штепсельная розетка
power politics политика с позиции силы
power station электростанция
power steering рулевое управление с усилителем
power train трансмиссия
sphere of power сфера влияния
state power государственная власть
superior power верховная власть
supreme power высшая власть
take power захватить власть
the powers that be сильные мира сего
thermal power station теплоэлектростанция
to the power of в степени
world power сверхдержава

Español (Spanish)
n. - fuerza, vigor, poder, facultad, autoridad, corriente, potencia, capacidad, dominio, competencia, transmisión, tracción, poderío
v. tr. - accionar, impulsar
adj. - de potencia, de fuerza o energía

idioms:

in power estar en el poder, gobernar, en el poder, en el gobierno
in the power of en poder de
power base base de poder
power behind the throne el poder en la sombra
power bloc bloque internacional
power block bloque de potencias
power breakfast desayuno de negocios
power cut corte de corriente, apagón
power down apagar
power failure corte de corriente, apagón
power game juego del poder
power line línea de transmisión
power of attorney poder notarial
power plant central eléctrica, grupo electrógeno
power play táctica de concentrar los jugadores en un punto determinado
power point toma de corriente
power politics política de fuerza
power station central eléctrica
power steering dirección asistida
power supply sistema de alimentación
power train sistema de transmisión
power up dar encendido, encender
sphere of power esfera de influencia
state power poder estatal
superior power superioridad, superioridad numérica
supreme power autoridad suprema
take power asumir el poder
the powers that be las autoridades
thermal power station central térmica
to the power of elevado a la potencia

Svenska (Swedish)
n. - makt, befogenhet, kraft, dignitet, potens (mat.), förmåga, massa (fam.)
v. - driva
adj. - makt-, elektrisk(t)

中文（简体） (Chinese (Simplified))
权, 政权, 势力, 权力, 职权, 使...有力量, 激励, 供以动力, 借影响有权势人物以操纵权力的

idioms:

be in power 当权, 掌权
power base 权力支柱
power behind the throne 幕后实权派, 幕后拥有权力者
power bloc 国际力量集团, 动力滑车
power block 国际力量集团, 动力滑车
power breakfast 早餐会报
power cut 停电, 供电中断
power down 减少动力消耗
power failure 停电, 电源故障, 断电
power game 权力游戏, 权力竞争
power line 电线, 输电线
power of attorney 委任状, 授权书
power plant 动力工场, 电动装置, 发电厂, 发电机
power play 集中攻势, 高压攻势
power point 电源插座, 墙装插座
power politics 强权政治
power station 发电所
power steering 动力方向盘
power supply 电力供应, 动力供应
power train 运载工具中的动力传动系
power up 增加动力消耗
sphere of power 权力范围, 势力范围
state power 国家权力机关
superior power 优势
supreme power 最高权力
take power 取得政权
the powers that be 掌权者们, 当局
thermal power station 火力发电所
to the power of 乘方, 指数

中文（繁體） (Chinese (Traditional))
n. - 權, 政權, 勢力, 權力, 職權
v. tr. - 使...有力量, 激勵, 供以動力
adj. - 借影響有權勢人物以操縱權力的

idioms:

be in power 當權, 掌權
power base 權力支柱
power behind the throne 幕後實權派, 幕後擁有權力者
power bloc 國際力量集團, 動力滑車
power block 國際力量集團, 動力滑車
power breakfast 早餐會報
power cut 停電, 供電中斷
power down 減少動力消耗
power failure 停電, 電源故障, 斷電
power game 權力遊戲, 權力競爭
power line 電線, 輸電線
power of attorney 委任狀, 授權書
power plant 動力工場, 電動裝置, 發電廠, 發電機
power play 集中攻勢, 高壓攻勢
power point 電源插座, 牆裝插座
power politics 強權政治
power station 發電所
power steering 動力方向盤
power supply 電力供應, 動力供應
power train 運載工具中的動力傳動系
power up 增加動力消耗
sphere of power 權力範圍, 勢力範圍
state power 國家權力機關
superior power 優勢
supreme power 最高權力
take power 取得政權
the powers that be 掌權者們, 當局
thermal power station 火力發電所
to the power of 乘方, 指數

한국어 (Korean)
n. - 힘, 능력, 생활력
v. tr. - ~에동력을 공급하다
adj. - 동력으로 운전하는

idioms:

be in power 수중에 있다
power down 에너지의 소비량을 내리다
power up 에너지의 소비량을 올리다
take power 권력을 잡다
the powers that be 동의하지 않거나 이해 못 하다
to the power of ~을 자승하여

日本語 (Japanese)
n. - 力, 能力, 体力, 知力, 権力, 力強さ, 強国, 権限, 動力, 電力, 権力者, 悪魔
v. - 動力を供給する

idioms:

be in power 政権を握って
power base 支持母体
power behind the throne 陰の実力者, 黒幕
power bloc パワーブロック
power block パワーブロック
power breakfast 重要な人物と共にする朝食
power cut 送電停止, 停電
power failure 停電
power game 権力獲得競争
power line 電力線, 送電線
power of attorney 委任状
power plant 発電所, 動力装置
power play パワープレー, 力の政策
power point 壁付けソケット
power politics 武力外交
power station 発電所
power steering パワーステアリング
power train パワートレイン, 伝導機構
staying power 耐久力, 持久力
take power 実権を握る
the powers that be 当局
the reins of power 支配権
to the power of (数学)～乗

العربيه (Arabic)
‏(الاسم) قوة, قدرة, سلطان, نفوذ (فعل) يزود بالقوة (صفه) قوة بدنيه وعقليه‏

עברית (Hebrew)
n. - ‮עוצמה, סמכות, אנרגיה, מעצמה, אלוהות, הספק, כושר, כוח, חזקה (במתימטיקה), יכולת, שליטה, כמות גדולה (מדוברת), כוח צבאי, תכונה פעילה, עליונות, השפעה‬
v. tr. - ‮סיפק כוח, הניע, הפסיק או הפעיל כוח, הגביר או צמצם את אספקת הכוח‬
adj. - ‮מכני, מנועי‬

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Best of the Web: Power

Some good "power" pages on the web:

American Sign Language
commtechlab.msu.edu

Math
mathworld.wolfram.com

Shopping: Power

power	Power Ranger
Power Lift Power Incline	Power Builder

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		Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved. Read more
		Sci-Tech Encyclopedia. McGraw-Hill Encyclopedia of Science and Technology. Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved. Read more
		Thesaurus. Roget's II: The New Thesaurus, Third Edition by the Editors of the American Heritage® Dictionary Copyright © 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. Read more
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		Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved. Read more
		Architecture. McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved. Read more
		Philosophy Dictionary. The Oxford Dictionary of Philosophy. Copyright © 1994, 1996, 2005 by Oxford University Press. All rights reserved. Read more
		Sports Science and Medicine. The Oxford Dictionary of Sports Science & Medicine. Copyright © Michael Kent 1998, 2006, 2007. All rights reserved. Read more
		Columbia Encyclopedia. The Columbia Electronic Encyclopedia, Sixth Edition Copyright © 2003, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/ Read more
		Science Dictionary. The New Dictionary of Cultural Literacy, Third Edition Edited by E.D. Hirsch, Jr., Joseph F. Kett, and James Trefil. Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin. All rights reserved. Read more
		Abbreviations. STANDS4.com - The source for acronyms and abbreviations. Copyright ©2006 STANDS4 LLC. All rights reserved. Read more
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		Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Power (physics)". Read more
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