Originally Posted by murg
The on device database in version 2.2.0 (and presumably 2.2.1) has a table for the dictionaries, but it doesn't look like it is being used yet.
So, it may be easier in the future to set up the dictionaries. Or even add new ones.
It is being used and has since 2.1.4. It shows what dictionaries you have installed. Plus I think there is an entry for any you have installed and then uninstalled. It looks like you should be able to define extra dictionaries in it. But, the little playing I have done with it put an extra dictionary in the "Manage dictionaries" list, but not in the lists when looking up or translating a word.