power

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 pow·ers. a deity; divinity:

    the heavenly powers.

13. pow·ers, Theology. an order of angels. Compare angel ( def 1 ).
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 number x ) a number whose logarithm is a times the logarithm of x (and is called the a th power of x ). 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 ( def 2 ).
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. Compare magnification ( def 2 ).
    2. the reciprocal of the focal length of a lens.

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.

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. Computers. to shut off.
2. Computers. to turn on.