Formally, Meta Stack Exchange should be called as Meta Stack Exchange or MSE. But when writing on specialized sites, I frequently use:
This has been discussed somewhere on the meta or the ____
What could be filled in the blank beside MSE? I once used "mother meta", but it doesn't really fit. I want to use something that can fill the blank more naturally.
The reason for that is because when the word "meta" is primed before, the later should also have a word "meta" explicitly, and in the form "adj + meta", not as a proper noun.