# Definition of common denominator in US English:

## common denominator

### noun

Mathematics
• 1A shared multiple of the denominators of several fractions.

• ‘In particular he sees the reduction of fractions to a common denominator as hard.’
• ‘Now we must change each fraction into the terms of the common denominator.’
• ‘So how do you find a common denominator? Easy - simply multiply both denominators together.’
• ‘Others would rewrite the fractions using common denominators.’
• ‘In order to add these fractions, we need to find the common denominator.’
1. 1.1 A feature shared by all members of a group.
‘the common denominator for the fevers was the bite of a tick’
• ‘The only common denominator between its members is that they are the most industrially developed countries in the world.’
• ‘‘The common denominators in the outbreaks of hospital-acquired infections are understaffing and overcrowding, year in and year out,’ he said.’
• ‘The common denominators among them were race and religion.’
• ‘The one thing they wanted me to figure out was what was the common denominator with all my readers.’
• ‘Little did you know, each of those three experiences shares a common denominator.’

## common denominator

/ˈkɑmən dəˈnɑməˌneɪdər/