I do not know how, but I converted it
Babylon English-Arabic
improved
with inflections and IPA phonetics
new wordcount: 239599
It needs the patch
Dictionary text font-family/font-size/line-height - beta enabled with a unicode font ; for example
CODE2000 (or at least one that include the arabic characters. Otherwise several characters will not be shown using the dictionary)
PS: The conversion was pretty complex, so a check and opinion of an arabian user will be appreciated