I did something similar. We created a space and created a category for each letter. However, you can only has a max of 25 categories in a space so we used XYZ as a single letter. Then each document in the space had a name for the entry, the description and then put in the appropriate category.
For just acronyms we created a separate doc per each letter for all acronyms. E.g. all acronyms that start with ‘E’ were in a single doc and in the category E.
Hope this helps.
I did mine within a group and it is working really well. I also took down the option for blog etc. just leaving document and discussion. I gave some instructions using the formatted text widget so colleagues are clear about how it works and then left it open for everyone to get involved. From time to time if I come across a new acronym I add it in.
We have called ours the Acronym and Jargon buster which means that people can also offer explanation about how the acronym or piece of jargon is used, within context. Like a Wiki anyone can go in and amend and change. Finally we also ask people to tag the acronym with the business unit the belong to as we have multiple acronyms, that can mean different things to different teams.