\begin{definition}[Definition:Primitive Polynomial (Ring Theory)]
Let $\Q \sqbrk X$ be the ring of polynomial forms over the field of rational numbers in the indeterminate $X$.
Let $f \in \Q \sqbrk X$ be such that:
:$\cont f = 1$
where $\cont f$ is the content of $f$.
That is:
:The greatest common divisor of the coefficients of $f$ is equal to $1$.
Then $f$ is described as '''primitive'''.
\end{definition}