# Definition:Divisor (Algebra)/Real Number/Part

Jump to navigation
Jump to search

## Definition

A more old-fashioned term for divisor is **part**:

In the words of Euclid:

(*The Elements*: Book $\text{V}$: Definition $1$)

The alert student will notice the circular definition: a **part** is defined in terms of measuring another quantity, and measurement is defined in terms of a divisor, that is, a **part**.