WordReference Random House Learner's Dictionary of American English © 2017
ˈcom•mon deˈnom•i•na•tor, n. [countable]
  • Mathematicsa number that is a multiple of all the denominators of a set of fractions.
  • a trait, characteristic, or attitude common to a group:The common denominator of all these groups is their desire to keep the judge from getting the position.

  • WordReference Random House Unabridged Dictionary of American English © 2017
    common denominator, 
    1. Mathematicsa number that is a multiple of all the denominators of a set of fractions.
    2. a trait, characteristic, belief, or the like common to or shared by all members of a group:Dedication to the cause of freedom was the common denominator of the American revolutionaries.
    • 1585–95

    'common denominator' also found in these entries:
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