ἐμπέδωσις
From LSJ
τὸ ἐγδοχῖον τοῦ ὕδατος καὶ τὰ ἐν τῆι πόλει ὑδραγώγια → the water reservoir and the conduits in the city (or on the acropolis)
English (LSJ)
εως, ἡ,
A making good, ὅρκων D.H.5.10.
Spanish (DGE)
-εως, ἡ ratificación ὅρκων D.H.5.10.