Did the repo update? If you have extras-devel repo enabled, you'll have a much longer list of available applications. Note, extras-devel often doesn't load due to overloaded servers ( https://bugs.maemo.org/show_bug.cgi?id=5818 ).

I'm not familiar with SDict, but sounds like it may be similar to qstardict, which is another nice dictionary application. It's in extras-devel (or maybe -testing).