Reduction is the act of cutting back or making smaller, like the reduction of a school budget that makes it necessary to eliminate art and music programs.

The process of reducing something is reduction, or making it smaller. You can talk about a reduction of sugar in someone's diet or a reduction of prices at your favorite shoe store. In math, reduction means bringing fractions to their lowest common denominators. And, in cooking, a reduction is a thick sauce that's made by boiling away most of the liquid, or reducing it to its concentrated essence.

Definitions of reduction
  1. noun
    the act of decreasing or reducing something
    synonyms: decrease, diminution, step-down
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    increase, step-up
    the act of increasing something
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    the act of reducing the amount or number
    mitigation, moderation
    the action of lessening in severity or intensity
    the act of causing to become less
    a reduction in quantity or rate
    the reduction of something's value or worth
    devitalisation, devitalization
    the act of reducing the vitality of something
    extenuation, mitigation, palliation
    to act in such a way as to cause an offense to seem less serious
    alleviation, easement, easing, relief
    the act of reducing something unpleasant (as pain or annoyance)
    (war) a reduction in intensity (of a crisis or a war)
    minimisation, minimization
    the act of reducing something to the least possible amount or degree or position
    the act of decreasing something markedly
    act of decreasing in length
    the act of becoming less
    deduction, subtraction
    the act of subtracting (removing a part from the whole)
    the act of letting the air out of something
    deduction, discount, price reduction
    the act of reducing the selling price of merchandise
    reducing prices back to some earlier level
    the act of reducing the strength of something
    a decrease in price or value
    the act of decreasing (something) in size or volume or quantity or scope
    reverse split, reverse stock split, split down
    a decrease in the number of outstanding shares of a corporation without changing the shareholders' equity
    amortisation, amortization
    the reduction of the value of an asset by prorating its cost over a period of years
    reduction or removal by the government of restrictions on a classified document or weapon
    shelter, tax shelter
    a way of organizing business to reduce the taxes it must pay on current earnings
    tax credit
    a direct reduction in tax liability (not dependent on the taxpayer's tax bracket)
    budget cut
    the act of reducing budgeted expenditures
    pay cut, salary cut
    the act of reducing a salary
    cost cutting
    the act of cutting costs
    price cut, price cutting
    cutting the price of merchandise to one lower than the usual or advertised price
    spending cut
    the act of reducing spending
    tax cut
    the act of reducing taxation
    the act of gradually lowering the size or amount
    service cutback
    the act of reducing service
    altering something (as a legislative act or a statement) in such a manner as to reduce its value
    the relaxation or relief of muscle spasms
    the easing of tensions or strained relations (especially between nations)
    easing the severity of a pain or a disease without removing the cause
    liberalisation, liberalization, relaxation
    the act of making less strict
    consumption, expenditure, using up
    the act of consuming something
    the act of exhausting something entirely
    decompressing, decompression
    relieving pressure (especially bringing a compressed person gradually back to atmospheric pressure)
    shortening something by omitting parts of it
    cut, cutting, cutting off
    the act of shortening something by chopping off the ends
    miniaturisation, miniaturization
    act of making on a greatly reduced scale
    a portion removed from the whole
    the act of deducting from an employee's salary
    the act of abating
    wilt, wilting
    causing to become limp or drooping
    weakening (reducing the concentration) by the addition of water or a thinner
    the act of weakening by stunting the growth or development of something
    contraction, muscle contraction, muscular contraction
    (physiology) a shortening or tensing of a part or organ (especially of a muscle or muscle fiber)
    the act of cutting short
    a gradual depletion of energy or resources
    tax avoidance
    the minimization of tax liability by lawful methods
    the act of weakening the power, value, or content of something
    type of:
    change of magnitude
    the act of changing the amount or size of something
  2. noun
    the act of reducing complexity
    synonyms: simplification
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    schematisation, schematization
    the act of reducing to a scheme or formula
    type of:
    the action of changing something
  3. noun
    any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent
    synonyms: reducing
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    type of:
    chemical reaction, reaction
    (chemistry) a process in which one or more substances are changed into others
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