two column nomenclature in a journal paper--LaTex

\documentclass{article}
\usepackage{mdframed}
\usepackage{multicol} 
\begin{document}
\begin{figure*}
	\centering
\begin{mdframed}
	\begin{multicols}{2}
		\textbf{Nomenclature}
		\begin{description}
			\item[term1] explanation explanation
			\item[term2] explanation explanation
			\item[term3] explanation explanation
			\item[term4] explanation explanation
%			\item[term6] explanation explanation
%			\item[term7] explanation explanation
%			\item[term8] explanation explanation
%			\item[term9] explanation explanation
		\end{description}
	\end{multicols}
\end{mdframed}
\end{figure*}
\end{document} 

 output