It is far from complete, but it has been gotten to a point that it is hoped you will find it quite useful.
I encourage everyone to bookmark it, use it, study it, contribute to it.
Just reading it and cross-referencing definitions against each other should help with understanding the network, and may help community members avoid confusion amongst ourselves by having better agreement on what our words mean.
Huge thanks to @dirvine for his time and attention in helping clarify a lot of the data to get the definitions as right as possible within the evolving nature of the network.
If you find it lacking or in error, or have suggestions about items or definitions, please feel free to contribute as provided for in the intro data to the glossary.
Nice work @fergish This should be helpful for folks I am sure. We can also use this to trim and make more friendly names, reducing the barrier to entry even more. (Mpid → PublicId etc.)