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Definition of order of magnitude noun from the Oxford Advanced American Dictionary

     

    order of magnitude

     noun
    noun
     
    (mathematics)
     
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  1. 1a level in a system of ordering things by size or amount, where each level is higher by a factor of ten The actual measurement is two orders of magnitude (= a hundred times) greater than we expected.
  2. 2(figurative) The problem is of the same order of magnitude for all concerned.
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