ὑδρογνώμων
From LSJ
Δύο γὰρ, ἐπιστήμη τε καὶ δόξα, ὧν τὸ μὲν ἐπίστασθαι ποιέει, τὸ δὲ ἀγνοεῖν → Two different things are science and belief: the one brings knowledge, the other ignorance
English (LSJ)
ονος, ὁ, A water-finder, Gp.2.10.6.
German (Pape)
[Seite 1173] ονος, das Wasser auffindend und Brunnen grabend, Geopon.
Greek (Liddell-Scott)
ὑδρογνώμων: -ον, ὁ διακρίνων τοὺς τόπους ἔνθα ὑπάρχει ὕδωρ πρὸς ὄρυξιν φρέατος, Γεωπον. 2. 10, 6.