ἐπίϋδρος
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
English (LSJ)
ἐπίϋδρον, capable of irrigation, κτῆμα PSI3.188.7(vi A.D.).