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least common denominator

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noun Mathematics.
  1. the smallest number that is a common denominator of a given set of fractions.
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Origin of least common denominator

First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for least common denominator

least common denominator

noun
  1. another name for lowest common denominator
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012