This latest version is an attempt at merging the work of Jürgen Purtz into what I had posted earlier. There was relatively little overlap in the terms we had chosen to define.
Each glossary definition now has a reference id (good idea Jürgen), the form of which is "glossary-term". So we can link to the glossary from outside if we so choose.
I encourage everyone to read the definitions, and suggest fixes to any inaccuracies or awkward phrasings. Mostly, though, I'm seeking feedback on the structure itself, and hoping to get that committed.