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Noun: order of magnitude
  1. A degree in a continuum of size or quantity
    "an explosion of a low order of magnitude";
    - order
  2. A number assigned to the ratio of two quantities; two quantities are of the same order of magnitude if one is less than 10 times as large as the other; the number of magnitudes that the quantities differ is specified to within a power of 10
    - magnitude

Derived forms: orders of magnitude

Type of: magnitude, ratio

Encyclopedia: Order of magnitude