How to concatenate two files on the fly and reference result as new file?

view full story

http://unix.stackexchange.com – I want to concatenate two files, i.e. staticEntries.dic and dynamicEntries.dic. As the names might show, the content of staticEntries.dic stays the same over time (contains common words), but to the contrary, dynamicEntries.dic might change over time (contains abbreviations that are extracted from DB). In my editor, I want to provide a mydict.dic, which contains the content of both files. I could do that via Shell, of course, but then I would have to replace the dynamicEntries.dic stuff from the mydict.dic file before concatenating a new version of dynamicEntries.dic to my resulting mydict.dic (HowTos)