σοφιστήριον
From LSJ
ἡμῶν δ' ὅσα καὶ τὰ σώματ' ἐστὶ τὸν ἀριθμὸν καθ' ἑνός, τοσούτους ἔστι καὶ τρόπους ἰδεῖν → whatever number of persons there are, the same will be found the number of minds and of characters
English (LSJ)
τό,
A school of sophistry, Oenom. ap. Eus.PE5.25.
German (Pape)
[Seite 914] τό, der Lehrort oder Lehrsaal eines Sophisten, Clem. Al.