How can I set \gls glossaries entries as bold, but not \glsdesc definitions?
% arara: pdflatex
% arara: makeglossaries
% arara: pdflatex
\documentclass{article}
\usepackage[colorlinks=true]{hyperref}
\usepackage[acronym,toc,style=listgroup]{glossaries}
\makeglossaries
\newglossaryentry{apc} {
name = {antigen presenting cell},
description = {cells that present MHC proteins on their surface},
}
% glossary definitions as bold
\renewcommand*{\glstextformat}[1]{\textcolor{black}{\textbf{#1}}}
\begin{document}
\Glspl{apc} are \glsdesc*{apc}.
\printglossary
\end{document}
(Please note this is related, but not identical, to such question as How to show glossary entry name in bold when using long style?)

\defglsentryfmt[acronym]{\color{black}\bfseries\glsgenentryfmt}– karlkoeller Jan 06 '15 at 06:08