ἄβροχος
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 (Corpus Hippocraticum, Aphorisms 1.6.2)
English (LSJ)
ον, (βρέχω)
A unwetted, unmoistened, Aeschin.2.21, Nic.Th.339, Sotion p.183 W.; κατὰ πόντον ἄ. ἀΐσσεις Mosch.2.143 (v.l. ἄτρομος): c. gen., ἅλμης Nonn.D.1.75. Adv. -χως without getting wet, Lib.Or.11.217. 2 wanting rain, waterless, πεδία E.Hel.1485; Ἀρκαδίη Call.Jov.19. 3 not inundated, PHib.1.85 (iii B. C.), BGU455 (i A. D.), etc.