ἐπισυναγωγή
From LSJ
κακοὶ μάρτυρες ἀνθρώποισιν ὀφθαλμοὶ καὶ ὦτα βαρβάρους ψυχὰς ἐχόντων → eyes and ears are poor witnesses for men if their souls do not understand the language (Heraclitus Phil.: Fr. B 107; Testimonia: Fragment 16, line 6)
English (LSJ)
ἡ,
A gathering or being gathered together, LXX 2 Ma.2.7, 2 Ep.Thess.2.1, etc. b collection of a sum of money, IG12(3).1270.11 (Syme, ii/i B. C.). 2 collective view, table, ὁρίων Ptol.Tetr.44. 3 pl., successive additions, Id.Alm.2.7. 4 Astrol., aggregation of planets in contact, Porph.in Ptol.188.
German (Pape)
[Seite 987] ἠ, das noch dazu Zusammenbringen, die Versammlung, N. T. u. a. Sp.