Thanks, Aristo, for helping with explanations.
Another crazy short-staffed Friday so didn't have a chance to peruse the site, which is really starting to bug me. They've added another layer of ads at the bottom. Perhaps we should move to Answer Bank. They have their act together - a few ads, of course, but under control.
Ixion - re cups: don't see it in Chambers but it's in the Canadian Oxford.
Assume you folks are totally metric.
I liked the D cup zinger.
To both: segue here:
http://www.crosswordsolver.org/forum/494308/aristo-ixion