Is it somehow possible to create a nomenclature using the nomencl package in conjunction with the hyperref package, so that whenever a nomenclature entry appears in the main text, it is actually a clickable link to the entry in the nomenclature?
Something like this:
\documentclass{minimal}
\usepackage{nomencl}
\makenomenclature
\usepackage{hyperref}
\begin{document}
Here, I define My Fancy Abbreviation (MFA\nomenclature{MFA}{My fancy abbreviation}).
Later on in the text, I want to use MFA, which should be a link to
the nomenclature entry.
\clearpage{}
\printnomenclature{}
\end{document}

\nomenclaturecommand does not print anything in the place where it is issued. You are probably looking for a glossary entry, and that can be achieved comfortably with theglossariespackage, not thenomenclpackage. – mafp Feb 23 at 17:00