πολιόω

A. turn grey, Dsc. 1.30, Eup. 1.94:—mostly in Pass., to be or become grey, ὁ ἄνθρωπος πολιοῦται μόνος Arist. GA 780b4, cf. Gal. 12.441; πρῶτον πολιοῦνται οἱ κρόταφοι Arist. HA 518a16, cf. Plu. Fr.inc. 149; of things, J. AJ 10.11.7.