Attached zip with grabbed images of pop up windows!
This is what I found out about the glossary empty definitions.
The glossary was created on the "front page" and marked as "primary glossary".
I followed the suggestions on this post to have it visible to all couses.( http://moodle.org/mod/forum/discuss.php?d=155420&parent=680697 )
Took me a while though to work out all the things to do:
as admin, Site Administration > Modules > Filters > Manage filters > enable Glossary Auto-linking
as admin on frontpage create a Global Glossary: in settings enable > Automatically link glossary entries
when creating an article in the Global Glossary, remember to check > This entry should be automatically linked.
The entries are indeed highlighted in all courses and in the session listing the courses in my front page, BUT a word definition is shown on the pop up window ONLY if it is on the text corresponding to the front page. If the same word belongs to the "Available Courses" area of the front page or the "categories" area of the front page the pop up window comes up but the definition for the word is not shown.
Also when the definition s shown, it doesn't wrap (text) properly on the pop up window size. Can I change window size or assign text wrapping?
I believe the attempt to make the glossary GLOBAL meaning available anywhere in the moodle installation failed to show the word definitions,while it worked to highlight them in the context of all courses etc.
Is there a proper method on how to make the Primary Glossary available to all courses, (all installation) ?
Thank you for any suggestions