%\newglossaryentry{Perm}{name=\ensuremath{{\epsilon}},description={Complex relative permittivity of a material}}
\newglossaryentry{Perm}{name=\ensuremath{\underline{\epsilon}},description={Complex relative permittivity of a material}}
%\newglossaryentry{Perm}{name=\ensuremath{{\epsilon}},description={Complex relative permittivity of a material}}
\newglossaryentry{Perm}{name=\ensuremath{\underline{\epsilon}},description={Complex relative permittivity of a material}}