Dear Experts - I need your help.
For those familiar with iOS and iBooks, there is a feature called 'Define' which appears when you tap on a word in iBooks. It draws on a built-in dictionary to define the word you selected.
This feature works great for me when looking at a BOOK, but when viewing a PDF in iBooks the feature is not there. In fact you can't even tap to highlight words on the PDF in iBooks.
I've tried all sorts of things (different PDFs with different permissions and different iPhones and iPads) and I suspect that the 'Define' feature is not available for PDFs in iBooks except that I can't find any literature about this on the web one way or the other. Maybe there's a special setting that needs to be made on the PDF in Acrobat in advance of loading it into the iPad??
Any ideas anyone??