1. the number below the line in a fraction that shows how many equal parts the whole is divided into
Usage: mathematics
2. a shared characteristic or feature that allows comparison or classification
Usage: often used in the phrase ‘common denominator’

Examples

• In the fraction 3/4, the denominator is 4.
• The denominator tells us the fraction is divided into four equal parts.
• To add fractions, you need a common denominator.
• The common denominator among all the students was their love of music.
• We need to find the lowest common denominator to solve this problem.
• Their shared interest in sports was the common denominator that brought them together.