# denominator

/dɪˈnɑməˌneɪtɝ/ (US) · /dɪnˈɒmɪnˌeɪtɐ/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/denominator
Updated: 2026-05-08

## Definition

the bottom number in a fraction that shows how many equal parts something is divided into. It also describes a quality or interest that a group of people all share.

For teachers: the number below the line in a common fraction, indicating the divisor. In a sociological context, it refers to a shared characteristic or standard within a group.

## Examples

- In the fraction 3/4, the number 4 is the denominator.
- The teacher explained that you must find a common denominator before adding two different fractions together.
- The campaign sought a common denominator among the diverse voter base, eventually settling on economic stability as the primary message to unite the various factions.

## Usage notes

- Often used in the figurative phrase 'common denominator' to describe a shared trait among different things.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.