Longman Dictionary of Contemporary English homepage

lowest common denominator

noun
     
Related topics: Numbers
lowest common denominator [uncountable]
1 the biggest possible number of people, including people who are very easily influenced or are willing to accept low standards:
Television quiz shows often seem to target the lowest common denominator.
2 technicalHMN the smallest number that the bottom numbers of a group of fractions can be divided into exactly denominator

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