For those who needs to look up alien words when reading, there's a new eBook reader app that allows adding additional dictionaries
It's called BookZ HD. BookZ was one of the oldest ereader available on the iPhone--it is now available for the iPad.
The app offers a reading experience similar to iBooks. It loads txt files and allows adding additional Stardict dictionaries.
Recommended for those who read foreign literature
http://itunes.apple.com/app/bookz-hd...ign-mpt=uo%3D4