# Definition:Rational Number/Fraction/Denominator

< Definition:Rational Number | Fraction(Redirected from Definition:Denominator)

## Contents

## Definition

Let $\dfrac a b$ be a fraction.

The term $b$ is known as the **denominator** of $\dfrac a b$.

## Also see

## Linguistic Note

The term **denominator** derives from the word **denomination** which, in this context, means **grouping of elements of the same kind**.

Thus, in the fraction $\dfrac 3 4$, it states that the objects of the same kind in question (of which the numerator specifies that there are $3$) are quarters.

## Sources

- 1981: Murray R. Spiegel:
*Theory and Problems of Complex Variables*(SI ed.) ... (previous) ... (next): $1$: Complex Numbers: The Real Number System: $3$ - 2008: Ian Stewart:
*Taming the Infinite*... (previous) ... (next): Chapter $3$: Notations and Numbers