διερεύνησις
From LSJ
τὸ πλῆθος οὐκ εὐαρίθμητον ἦν → the crowd wasn't easy to count, the crowd was not small, it was not a small crowd
English (LSJ)
-εως, ἡ, investigation, Str.16.4.5, Iamb. Comm.Math.22, dub. in Epicur.Nat.135 G.
Spanish (DGE)
-εως, ἡ
1 investigación, estudio Epicur.Fr.[34.32] 13, c. gen. τῆς τῶν ἐλεφάντων θήρας Str.16.4.5, cf. Iambl.Comm.Math.22, τοῦ ὄντος Procl.in Prm.1072.2, σαφὴς γίνεται ἡ δ. τοῦ πράγματος Clem.Al.Strom.8.11.2.
2 plu. patrullas de exploración Afric.Cest.11.2.28.
Greek (Liddell-Scott)
διερεύνησις: -εως, ἡ, ἀκριβὴς ἔρευνα, Κλήμης 919, Ἰάμβλιχ. (Στοβ. Ἀνθ. 81, 17).
German (Pape)
ἡ, das Durchforschen, Stob.