Reduction meaning

rĭ-dŭk'shən
The definition of a reduction is a decrease or a lessening in amount, or the amount by which something decreases or goes down.

When the income tax rate is cut, this is an example of a time when you get a reduction in taxes.

When a price goes down by 10 percent, this is an example of a 10 percent reduction.

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The act or process of reducing.
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The result of reducing.

A reduction in absenteeism.

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The amount by which something is lessened or diminished.

A reduction of 12 percent in violent crime.

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A sauce that has been thickened or concentrated by boiling.
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The first meiotic division, in which the chromosome number is reduced.
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A reducing or being reduced.
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Anything made or brought about by reducing, as a smaller copy, lowered price, sauce of concentrated liquid, etc.
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The amount by which anything is reduced.
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The act or process of reducing.
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The first meiotic division, in which the chromosome number is reduced from diploid to haploid.
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The changing of a fraction into a simpler form, especially by dividing the numerator and denominator by a common factor. For example, the fraction8 /12 can be reduced to4 /6 , which can be further reduced to2 /3 , in each case by dividing both the numerator and denominator by 2.
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A chemical reaction in which an atom or ion gains electrons, thus undergoing a decrease in valence. If an iron atom having a valence of +3 gains an electron, the valence decreases to +2.
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The act, process, or result of reducing.
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The amount or rate by which something is reduced, e.g. in price.

A 5% reduction in robberies.

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(chemistry) A reaction in which electrons are gained and valence is reduced; often by the removal of oxygen or the addition of hydrogen.
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(cooking) The process of rapidly boiling a sauce to concentrate it.
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(mathematics) The rewriting of an expression into a simpler form.
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(computability theory) A transformation of one problem into another problem, such as mapping reduction or polynomial reduction.
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(music) An arrangement for a far smaller number of parties, e.g. a keyboard solo based on a full opera.
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(philosophy, phenomenology) A philosophical procedure intended to reveal the objects of consciousness as pure phenomena. (See phenomenological reduction.)
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(medicine) A medical procedure to restore a fracture or dislocation to the correct alignment.
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Origin of reduction

  • Middle English reduccion restoration from Old French reduction from Latin reductiō reductiōn- from reductus past participle of redūcere to bring back reduce
    From American Heritage Dictionary of the English Language, 5th Edition
  • From Middle English reduccion, from Old French reducion, from Latin reductio.
    From Wiktionary