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English definition of “common denominator”

common denominator

noun [C] uk   us  

common denominator noun [C] (NUMBER)

specialized mathematics a number that can be divided exactly by all the denominators (= numbers under the line) in a group of fractions: 12 is a common denominator of 1/3 and 1/4.

common denominator noun [C] (SIMILARITY)

something that is the same for all the members of a group and might bring them together: The common denominator was that we had all worked for the same company.
(Definition of common denominator from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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