Definition of common denominator noun from the Oxford Advanced American Dictionary

     

    common denominator

     noun
    noun
     
     
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  1. 1(mathematics) a number that can be divided exactly by all the numbers below the line in a set of fractions compare denominator
  2. 2an idea, attitude, or experience that is shared by all the members of a group They were united through the common denominator of suffering. see also lowest common denominator
See the Oxford Advanced Learner's Dictionary entry: common denominator