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# common denominator

noun
1.
Mathematics. a 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.
Origin of common denominator
1585-1595
1585-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for common de-nominator

## common denominator

noun
1.
an integer exactly divisible by each denominator of a group of fractions: 1/3, 1/4, and 1/6 have a common denominator of 12
2.
a belief, attribute, etc, held in common by members of a class or group
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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common de-nominator in Science
 common denominator   A quantity into which all the denominators of a set of fractions may be divided without a remainder. For example, the fractions 1/3 and 2/5 have a common denominator of 15.
The American Heritage® Science Dictionary
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common de-nominator in Culture

### common denominator definition

A number that will allow fractions with different denominators to be converted into fractions with the same denominator, so that these fractions can be added or subtracted. The fractions can be expressed as whole numbers divided by the common denominator. Thus, 12 is a common denominator for 1/3 and 1/4, since they can be written as 4/12 and 3/12, respectively. (See lowest common denominator.)

Note: Figuratively, a common denominator is a common factor in different events: “The common denominator in these crimes is the use of inside knowledge of computer systems.”
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
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### Difficulty index for common denominator

Few English speakers likely know this word

### Word Value for common

12
16
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