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power

power

51 5.8
Number that shows how many times to multiply a number by itself
  • noun
  • /ˈpaʊər/
  • Specialized
translation icon : potencia
  • When calculating the power of ten, you multiply ten by itself several times according to the exponent.
  • powers of two
  • powers of ten
  • powers of 2

A sum of integer powers of a variable, OK.

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Examples

  • So with involution, one raises the base to a power.

  • A binary bignum uses a power of two as a base.

    Academic text (1999)
  • You could square it, cube it, take powers, things like that.

  • The number of processors N does not need to be a power of two, but it must be even.

    Academic text (2000)
  • Do you realize what that'll do to the balance of power in our homes?

  • But all these actions directed by the Federal Reserve alter the purchasing power of our money.

  • So each row is actually a set of ascending powers of a number.

  • In some countries, benefit checks simply stopped; in others, hyperinflation eroded their purchasing power to almost nothing.

    Academic text (2002)
  • Transformation of the decimal bignum times a power of ten into a binary bignum times a power of two.

    Academic text (1999)
  • But with space being really big and all, the chances of being picked up within that time are two to the power of two billion, 79 million, 460 thousand, 347 to one against.

Synonyms

index
vspower
  • Specialized
12 7.1

A small number written above a number that shows how many times to multiply it by itself

is the general alternative name used outside formal math for that superscript
exponent
vspower
  • Specialized
3 5.1

A number written above another number showing how many times to multiply it by itself

is the more common alternative term for that same superscript

Idioms

2 8.2

A person who secretly controls a leader from behind the scenes

Having information gives a person an advantage to succeed or influence others

Compounds

143 2.9

A place where electricity is made for homes and businesses

nuclear power
  • Specialized
119 3.4

Electricity made by using the energy inside atoms for homes and businesses

68 2.5

A cable that carries electricity from power stations to homes and businesses

air power
  • Specialized
65 4.0

Military strength a country has from its planes

53 3.0

A time when the electricity goes off

43 3.7

A network of wires and stations that brings electricity to homes and businesses

37 2.8

A way to make electricity by using wind to turn large machines like windmills

A situation where groups or countries share power so no one becomes too strong

30 3.0

Energy made from sunlight to run buildings and devices

28 3.5

A company that makes and provides electricity to homes and businesses

23 6.0

A document that allows one person to make legal and money decisions for another

23 3.2

A building where electricity is made for a town or area

21 4.9

A country that can affect events around the world

How people in a group share authority and influence

19 5.0

Being able to keep working well for a long time

17 2.7

A tool that uses electricity, a battery, or a small engine to work

15 3.4

A sudden loss of electricity in an area

power system
  • Specialized
15 3.5

A network of machines and wires that make and send electricity to homes and businesses

electric power
  • Specialized
14 3.4

How fast electricity moves in a circuit is equal to voltage times current

power broker
  • Literature
14 7.0

A person who controls votes and support to influence political and business decisions

electrical power
  • Specialized
12 3.2

The rate at which electricity flows through a circuit, measured by voltage times current

12 4.2

A country strong enough to influence events and policies around the world

11 5.3

The act of gaining control of a country, like becoming president

power-hungry
  • Offensive
11 6.3

A person who wants a lot of control over other people

A group of people who have authority to make decisions

power trip
  • Offensive
9 7.8

Wanting to feel important by being strict or mean to others

power steering
  • Specialized
8 3.3

A system that helps a driver turn the steering wheel with less effort

power play
  • Jargon
8 4.3

A time in hockey when one team has more players because of penalties

Ability to make things happen in ways that break natural rules

power couple
  • Literature
8 3.6

Two people in a romantic relationship who are both very successful and influential

6 4.6

A country with strong military and political influence worldwide

5 2.4

A wire that carries electricity to a machine or device

power user
  • Jargon
5 6.0

A person who works with advanced computer programs and often needs a powerful computer

real power
  • Specialized
4 6.7

Electrical energy in an alternating current that actually does work

4 2.2

A cable that connects a device to a wall outlet to give it power

4 2.8

A tool that uses electricity or a battery to make holes in hard things like wood and metal

power play
  • Literature
4 6.3

A forceful action to gain control over other people

power of the purse
  • Literature
4 6.6

Control over decisions by deciding how money is used

3 4.1

A group of companies that make electricity using energy from atoms

power module
  • Specialized
3 5.5

A small unit that gives electricity to other parts of a device

power move
  • Informal
3 6.6

A bold action to show strength or gain advantage over others

power politics
  • Literature
3 7.4

Countries use or threaten force to get what they want

3 3.2

A machine with a blade that has teeth and cuts wood or other materials

power unit
  • Specialized
3 4.1

A standard measure of electric power, like the watt

2 3.2

Energy from nuclear reactions that makes electricity for homes and cities

power pack
  • Specialized
2 3.9

A device that gives electric power at the right voltage for equipment

2 3.2

A machine that cuts grass using a small engine

2 8.8

The right to choose who gets certain property, often in a will

war power
  • Formal
2 7.7

Special authority the government uses during war to do things beyond normal limits

A fast walk done for exercise with strong arm swinging

Power that attracts many people, especially customers or fans

1 4.8

A country's strength at sea, shown by a powerful navy that controls the seas

fourth power
  • Specialized
1 7.3

A number multiplied by itself four times

resolving power
  • Specialized
1 6.7

The ability of a microscope or telescope to see two close things as separate

power brake
  • Specialized
1 3.5

A vehicle system that helps the driver stop with less force

A portable rechargeable battery that gives electricity to devices when there is no power

power-hungry
  • Specialized
1 5.1

A device that uses a lot of electricity and drains batteries quickly

second power
  • Specialized
1 3.2

The result of multiplying a number by itself

third power
  • Specialized
1 3.8

A number multiplied by itself twice

A central government gives power to local or regional governments to make local decisions

active power
  • Specialized
1 4.9

Energy in an electrical circuit that does useful work, like turning motors or lighting lamps

flower power
  • Archaic
1 6.6

A youth movement in the 1960s that promoted peace, love and no violence

1 6.7

Ability to sing or shout loudly for a long time

motive power
  • Specialized
1 5.5

Energy that makes a machine like a car or train move

power breakfast
  • Literature
1 4.8

A morning meeting where important people discuss business over breakfast

power engineering
  • Specialized
1 4.2

The study of how to make, move, and use electricity in systems like generators and power grids

power meter
  • Specialized
1 3.6

A device that measures how much electricity a circuit or appliance uses

power loom
  • Specialized
1 5.1

A machine that weaves cloth using power instead of hands

power shovel
  • Specialized
1 4.1

A large machine with a bucket that digs and moves earth

power play
  • Jargon
1 4.6

A team plan that puts several players in one area to try to score

power worker
  • Specialized
1 3.4

A person who runs or fixes machines at a power station that makes electricity

power train
  • Specialized
1 5.1

Connected gears and parts that send power from a vehicle's engine or motor to its wheels

9.9

Influence from people in a community, sometimes using sexual appeal to sway decisions

Surface Forms

power singular
powers plural

Etymology

Power in math is a helpful image of 'strength': it shows how many times a number multiplies itself, so the word fits the idea of a number's multiplying 'force'.