Use the amsmath package
\begin{equation}
{\larger[-3]
\begin{pmatrix}
\text{alternate}\\
\text{definition}
\end{pmatrix}
} \qquad
y = x
\end{equation}
Claus
On Sep 6, 2009, at 23:02, david craig wrote:
> % {\scriptscriptstyle
> \begin{pmatrix}
> \text{alternate}\\
> \text{definition}
> \end{pmatrix}
> } \qquad
> y = x