\begin{definition}[Definition:Divisor (Algebra)/Real Number/Part]
A more old-fashioned term for divisor is '''part''':
{{EuclidSaid}}
:''{{:Definition:Euclid's Definitions - Book V/1 - Part}}''
{{EuclidDefRefNocat|V|1|Part}}
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'''.
Category:Definitions/Euclidean Number Theory
\end{definition}