# power

*Noun.*A button of a computer, a video game console, or similar device, that when pressed, causes the device to be either shut down or powered up.*Noun.*(*countable*) capability or influence.*Noun.*(*uncountable*) physical force or strength.*Noun.*control, particularly legal or political (jurisdiction).*Noun.*(*uncountable*) electricity or a supply of electricity.*Noun.*(*uncountable, physics*) A measure of the rate of doing work or transferring energy.*Noun.*(*uncountable, physics*) A rate to magnify an optical image by a lens or mirror.*Noun.*(*biblical*) In Christian angelology, the fourth level of angels, ranked above archangels and below principalities.*Noun.*(*mathematics*) A product of equal factors. Notation and usage: ''x''^{''n''}, read as "''x'' to the power of ''n''" or "''x'' to the ''n''th power", denotes ''x'' × ''x'' × ... × ''x'', in which ''x'' appears ''n'' times, where ''n'' is called the exponent; the definition is extended to non-integer and complex exponents.*Noun.*(*set theory*) Cardinality.*Noun.*(*statistics*) The probability that a statistical test will reject the null hypothesis when the alternative hypothesis is true.*Verb.*(*transitive*) To provide power for (a mechanical or electronic device).*Verb.*(*transitive*) To hit or kick something forcefully.

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This entry was last updated on RefTopia from its source on 3/20/2012.