reduction - definition and synonyms


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  1. 1
    [countable/uncountable] the process or result of making something smaller or less in amount, size, importance etc
    reduction in:

    There has been a dramatic reduction in the birth rate.

    reduction of:

    The treaty committed each side to a reduction of 30 per cent in its stock of weapons.

  2. 2
    [countable] the amount by which the price of something is reduced
    reduction for:

    £50 reduction for all guests staying 14 nights in June

  3. 3
    [countable] a copy of a photograph, picture etc that is smaller than the original
  4. 4
    [countable/uncountable] chemistry a chemical reaction that produces an increase in hydrogen or a loss of oxygen