μεσόσφαιρον
From LSJ
μηδὲν κοτυλίζειν, ἀλλὰ καταπάττειν χύδην → not to sell by the cupful, but to dole out indiscriminately | not to sell by retail but wholesale
German (Pape)
[Seite 140] τό, die mittlere Art des kugelförmigen indischen μαλάβαθρον, der kleinere hieß μικρόσφαιρον, Arr. Peripl.